{"id":38455,"date":"2026-01-25T13:34:27","date_gmt":"2026-01-25T06:34:27","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=38455"},"modified":"2026-01-25T13:34:55","modified_gmt":"2026-01-25T06:34:55","slug":"tai-sao-truy-cap-website-bang-https-lai-an-toan-hon","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/","title":{"rendered":"T\u1ea1i Sao Truy C\u1eadp Website B\u1eb1ng HTTPS L\u1ea1i An To\u00e0n H\u01a1n?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#HTTPS-la-gi-va-khac-biet-ra-sao-so-voi-HTTP\" >HTTPS l\u00e0 g\u00ec v\u00e0 kh\u00e1c bi\u1ec7t ra sao so v\u1edbi HTTP?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#HTTP-Giao-thuc-truyen-tai-sieu-van-ban\" >HTTP: Giao th\u1ee9c truy\u1ec1n t\u1ea3i si\u00eau v\u0103n b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#HTTPS-Phien-ban-an-toan-cua-HTTP\" >HTTPS: Phi\u00ean b\u1ea3n an to\u00e0n c\u1ee7a HTTP<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Bang-so-sanh-chi-tiet-HTTP-va-HTTPS\" >B\u1ea3ng so s\u00e1nh chi ti\u1ebft HTTP v\u00e0 HTTPS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Tai-sao-truy-cap-website-bang-HTTPS-lai-an-toan-hon\" >T\u1ea1i sao truy c\u1eadp website b\u1eb1ng HTTPS l\u1ea1i an to\u00e0n h\u01a1n?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#1-Du-lieu-duoc-ma-hoa-Encryption-nhu-the-nao\" >1. D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a (Encryption) nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#2-Tinh-toan-ven-cua-du-lieu-Data-Integrity-duoc-dam-bao-ra-sao\" >2. T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u (Data Integrity) \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o ra sao?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#3-Xac-thuc-danh-tinh-Authentication-dien-ra-nhu-the-nao\" >3. X\u00e1c th\u1ef1c danh t\u00ednh (Authentication) di\u1ec5n ra nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Cac-rui-ro-an-ninh-mang-khi-khong-su-dung-HTTPS-la-gi\" >C\u00e1c r\u1ee7i ro an ninh m\u1ea1ng khi kh\u00f4ng s\u1eed d\u1ee5ng HTTPS l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Tan-cong-%E2%80%9CMan-in-the-Middle%E2%80%9D-MITM\" >T\u1ea5n c\u00f4ng &#8220;Man-in-the-Middle&#8221; (MITM)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Nguy-co-bi-tiem-nhiem-ma-doc-Injection-Attacks\" >Nguy c\u01a1 b\u1ecb ti\u00eam nhi\u1ec5m m\u00e3 \u0111\u1ed9c (Injection Attacks)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Gia-mao-website-Phishing\" >Gi\u1ea3 m\u1ea1o website (Phishing)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Loi-ich-thuc-te-cua-HTTPS-ngoai-van-de-bao-mat\" >L\u1ee3i \u00edch th\u1ef1c t\u1ebf c\u1ee7a HTTPS ngo\u00e0i v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#HTTPS-la-tin-hieu-xep-hang-quan-trong-cua-Google-SEO\" >HTTPS l\u00e0 t\u00edn hi\u1ec7u x\u1ebfp h\u1ea1ng quan tr\u1ecdng c\u1ee7a Google (SEO)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Tang-ty-le-chuyen-doi-CR-va-niem-tin-nguoi-dung\" >T\u0103ng t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i (CR) v\u00e0 ni\u1ec1m tin ng\u01b0\u1eddi d\u00f9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Cai-thien-toc-do-tai-trang-voi-HTTP2\" >C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang v\u1edbi HTTP\/2<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Cac-cau-hoi-thuong-gap-FAQs\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Chuyen-tu-HTTP-sang-HTTPS-co-lam-giam-toc-do-website-khong\" >Chuy\u1ec3n t\u1eeb HTTP sang HTTPS c\u00f3 l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 website kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#HTTPS-co-bao-ve-website-khoi-bi-hack-100-khong\" >HTTPS c\u00f3 b\u1ea3o v\u1ec7 website kh\u1ecfi b\u1ecb hack 100% kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Chung-chi-SSL-mien-phi-Lets-Encrypt-co-an-toan-nhu-ban-tra-phi-khong\" >Ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed (Let&#8217;s Encrypt) c\u00f3 an to\u00e0n nh\u01b0 b\u1ea3n tr\u1ea3 ph\u00ed kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Lam-sao-de-biet-mot-website-co-dung-HTTPS-hay-khong\" >L\u00e0m sao \u0111\u1ec3 bi\u1ebft m\u1ed9t website c\u00f3 d\u00f9ng HTTPS hay kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/tai-sao-truy-cap-website-bang-https-lai-an-toan-hon\/#Loi-ket\" >L\u1eddi k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd \u0111\u1ec3 \u00fd \u0111\u1ebfn m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a nh\u1ecf m\u00e0u xanh l\u00e1 c\u00e2y n\u1eb1m ngay c\u1ea1nh thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t ch\u01b0a? Ho\u1eb7c c\u00f3 l\u1ebd b\u1ea1n \u0111\u00e3 th\u1ea5y d\u00f2ng ch\u1eef c\u1ea3nh b\u00e1o &#8220;Not Secure&#8221; (Kh\u00f4ng b\u1ea3o m\u1eadt) m\u00e0u \u0111\u1ecf \u0111\u00e1ng s\u1ee3 khi truy c\u1eadp v\u00e0o m\u1ed9t trang web n\u00e0o \u0111\u00f3? Nh\u1eefng t\u00edn hi\u1ec7u nh\u1ecf b\u00e9 n\u00e0y \u0111\u1ea1i di\u1ec7n cho m\u1ed9t trong nh\u1eefng n\u1ec1n t\u1ea3ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a Internet hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>Khi b\u1ea1n th\u1ef1c hi\u1ec7n giao d\u1ecbch ng\u00e2n h\u00e0ng tr\u1ef1c tuy\u1ebfn. Khi b\u1ea1n nh\u1eadp s\u1ed1 th\u1ebb t\u00edn d\u1ee5ng \u0111\u1ec3 mua s\u1eafm tr\u00ean Shopee hay Lazada. Khi b\u1ea1n \u0111\u0103ng nh\u1eadp v\u00e0o email c\u00e1 nh\u00e2n. B\u1ea1n lu\u00f4n c\u1ea7n s\u1ef1 \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng tin c\u1ee7a m\u00ecnh kh\u00f4ng b\u1ecb ai \u0111\u00f3 nh\u00ecn th\u1ea5y. S\u1ef1 \u0111\u1ea3m b\u1ea3o n\u00e0y \u0111\u1ebfn t\u1eeb HTTPS.<\/p>\n<p>V\u1eady ch\u00ednh x\u00e1c th\u00ec \u0111i\u1ec1u g\u00ec di\u1ec5n ra \u0111\u1eb1ng sau chi\u1ebfc \u1ed5 kh\u00f3a \u0111\u00f3? T\u1ea1i sao th\u00eam m\u1ed9t ch\u1eef &#8220;S&#8221; v\u00e0o sau &#8220;HTTP&#8221; l\u1ea1i t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn \u0111\u1ebfn v\u1eady v\u1ec1 m\u1eb7t an ninh m\u1ea1ng? B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong><\/a> s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft, khoa h\u1ecdc v\u00e0 d\u1ec5 hi\u1ec3u nh\u1ea5t v\u1ec1 l\u00fd do t\u1ea1i sao truy c\u1eadp website b\u1eb1ng HTTPS l\u1ea1i an to\u00e0n h\u01a1n, v\u00e0 t\u1ea1i sao \u0111\u00e2y l\u00e0 ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c cho m\u1ecdi website ng\u00e0y nay.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"HTTPS-la-gi-va-khac-biet-ra-sao-so-voi-HTTP\"><\/span>HTTPS l\u00e0 g\u00ec v\u00e0 kh\u00e1c bi\u1ec7t ra sao so v\u1edbi HTTP?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_38483\" aria-describedby=\"caption-attachment-38483\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38483\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-vs.-HTTP.webp\" alt=\"HTTPS vs. HTTP\" width=\"750\" height=\"409\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-vs.-HTTP.webp 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-vs.-HTTP-300x164.webp 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-38483\" class=\"wp-caption-text\">HTTPS vs. HTTP<\/figcaption><\/figure>\n<p>Tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt, ch\u00fang ta c\u1ea7n hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a hai thu\u1eadt ng\u1eef n\u00e0y. Internet ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc giao ti\u1ebfp. C\u00e1c quy t\u1eafc n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 giao th\u1ee9c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"HTTP-Giao-thuc-truyen-tai-sieu-van-ban\"><\/span>HTTP: Giao th\u1ee9c truy\u1ec1n t\u1ea3i si\u00eau v\u0103n b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>HTTP l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Hypertext Transfer Protocol<\/strong>. \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng s\u01a1 khai c\u1ee7a vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u tr\u00ean World Wide Web. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng HTTP gi\u1ed1ng nh\u01b0 vi\u1ec7c b\u1ea1n g\u1eedi m\u1ed9t t\u1ea5m b\u01b0u thi\u1ebfp qua \u0111\u01b0\u1eddng b\u01b0u \u0111i\u1ec7n.<\/p>\n<p>Tr\u00ean t\u1ea5m b\u01b0u thi\u1ebfp \u0111\u00f3, b\u1ea1n vi\u1ebft m\u1ecdi th\u00f4ng tin: t\u00ean ng\u01b0\u1eddi nh\u1eadn, n\u1ed9i dung tin nh\u1eafn, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i. B\u1ea5t k\u1ef3 ai c\u1ea7m t\u1ea5m b\u01b0u thi\u1ebfp n\u00e0y tr\u00ean \u0111\u01b0\u1eddng \u0111i \u2013 t\u1eeb ng\u01b0\u1eddi \u0111\u01b0a th\u01b0, nh\u00e2n vi\u00ean ph\u00e2n lo\u1ea1i b\u01b0u ph\u1ea9m, cho \u0111\u1ebfn ng\u01b0\u1eddi h\u00e0ng x\u00f3m t\u00f2 m\u00f2 \u2013 \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c n\u1ed9i dung tr\u00ean \u0111\u00f3. D\u1eef li\u1ec7u trong HTTP \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n t\u00fay (plain text). N\u1ebfu b\u1ea1n g\u1eedi m\u1eadt kh\u1ea9u l\u00e0 &#8220;123456&#8221; qua HTTP, hacker ch\u1eb7n \u0111\u01b0\u1ee3c g\u00f3i tin s\u1ebd nh\u00ecn th\u1ea5y ch\u00ednh x\u00e1c chu\u1ed7i k\u00fd t\u1ef1 &#8220;123456&#8221;.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"HTTPS-Phien-ban-an-toan-cua-HTTP\"><\/span>HTTPS: Phi\u00ean b\u1ea3n an to\u00e0n c\u1ee7a HTTP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>HTTPS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Hypertext Transfer Protocol Secure<\/strong>. Ch\u1eef &#8220;S&#8221; \u1edf cu\u1ed1i ch\u00ednh l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a &#8220;Secure&#8221; (B\u1ea3o m\u1eadt). HTTPS kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t giao th\u1ee9c ho\u00e0n to\u00e0n m\u1edbi thay th\u1ebf HTTP. \u0110\u00e2y th\u1ef1c ch\u1ea5t l\u00e0 HTTP \u0111\u01b0\u1ee3c b\u1ecdc th\u00eam m\u1ed9t l\u1edbp v\u1ecf b\u1ea3o v\u1ec7 v\u1eefng ch\u1eafc.<\/p>\n<p>L\u1edbp v\u1ecf n\u00e0y ch\u00ednh l\u00e0 ch\u1ee9ng ch\u1ec9 SSL (Secure Sockets Layer) ho\u1eb7c phi\u00ean b\u1ea3n hi\u1ec7n \u0111\u1ea1i h\u01a1n l\u00e0 TLS (Transport Layer Security). N\u1ebfu HTTP l\u00e0 t\u1ea5m b\u01b0u thi\u1ebfp tr\u1ea7n tr\u1ee5i, th\u00ec HTTPS gi\u1ed1ng nh\u01b0 vi\u1ec7c b\u1ea1n \u0111\u1eb7t b\u1ee9c th\u01b0 v\u00e0o m\u1ed9t chi\u1ebfc k\u00e9t s\u1eaft si\u00eau b\u1ec1n, kh\u00f3a l\u1ea1i, r\u1ed3i m\u1edbi g\u1eedi chi\u1ebfc k\u00e9t s\u1eaft \u0111\u00f3 \u0111i. Ch\u1ec9 c\u00f3 ng\u01b0\u1eddi nh\u1eadn c\u00f3 ch\u00eca kh\u00f3a ph\u00f9 h\u1ee3p m\u1edbi m\u1edf \u0111\u01b0\u1ee3c k\u00e9t s\u1eaft \u0111\u1ec3 \u0111\u1ecdc th\u01b0.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bang-so-sanh-chi-tiet-HTTP-va-HTTPS\"><\/span>B\u1ea3ng so s\u00e1nh chi ti\u1ebft HTTP v\u00e0 HTTPS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 h\u00ecnh dung r\u00f5 h\u01a1n, h\u00e3y xem b\u1ea3ng so s\u00e1nh d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<figure class=\"table\">\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau ch\u00ed<\/th>\n<th>HTTP<\/th>\n<th>HTTPS<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Vi\u1ebft t\u1eaft c\u1ee7a<\/strong><\/td>\n<td>Hypertext Transfer Protocol<\/td>\n<td>Hypertext Transfer Protocol Secure<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng<\/strong><\/td>\n<td>Truy\u1ec1n d\u1eef li\u1ec7u d\u1ea1ng v\u0103n b\u1ea3n r\u00f5 (Plain text). Kh\u00f4ng m\u00e3 h\u00f3a.<\/td>\n<td>Truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a (Encryption) th\u00f4ng qua SSL\/TLS.<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u1ed5ng k\u1ebft n\u1ed1i (Port)<\/strong><\/td>\n<td>S\u1eed d\u1ee5ng Port 80.<\/td>\n<td>S\u1eed d\u1ee5ng Port 443.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed9 b\u1ea3o m\u1eadt<\/strong><\/td>\n<td>R\u1ea5t th\u1ea5p. D\u1ec5 b\u1ecb nghe l\u00e9n v\u00e0 \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u.<\/td>\n<td>R\u1ea5t cao. B\u1ea3o m\u1eadt th\u00f4ng tin ng\u01b0\u1eddi d\u00f9ng v\u00e0 giao d\u1ecbch.<\/td>\n<\/tr>\n<tr>\n<td><strong>Nh\u1eadn di\u1ec7n tr\u00ean tr\u00ecnh duy\u1ec7t<\/strong><\/td>\n<td>C\u1ea3nh b\u00e1o &#8220;Not Secure&#8221; (Kh\u00f4ng b\u1ea3o m\u1eadt) tr\u00ean thanh \u0111\u1ecba ch\u1ec9.<\/td>\n<td>Bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a an to\u00e0n. Thanh \u0111\u1ecba ch\u1ec9 c\u00f3 th\u1ec3 hi\u1ec7n m\u00e0u xanh.<\/td>\n<\/tr>\n<tr>\n<td><strong>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn SEO<\/strong><\/td>\n<td>Kh\u00f4ng \u0111\u01b0\u1ee3c Google \u01b0u ti\u00ean. Th\u1eadm ch\u00ed b\u1ecb \u0111\u00e1nh t\u1ee5t h\u1ea1ng.<\/td>\n<td>L\u00e0 t\u00edn hi\u1ec7u x\u1ebfp h\u1ea1ng t\u00edch c\u1ef1c c\u1ee7a Google. \u0110\u01b0\u1ee3c \u01b0u ti\u00ean hi\u1ec3n th\u1ecb.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u00eanh l\u1ec7ch to l\u1edbn v\u1ec1 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng. Nh\u01b0ng c\u1ee5 th\u1ec3 th\u00ec HTTPS b\u1ea3o v\u1ec7 ch\u00fang ta b\u1eb1ng c\u00e1ch n\u00e0o?<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-truy-cap-website-bang-HTTPS-lai-an-toan-hon\"><\/span>T\u1ea1i sao truy c\u1eadp website b\u1eb1ng HTTPS l\u1ea1i an to\u00e0n h\u01a1n?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_38484\" aria-describedby=\"caption-attachment-38484\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38484\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS.webp\" alt=\"HTTPS\" width=\"750\" height=\"409\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS.webp 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-300x164.webp 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-38484\" class=\"wp-caption-text\">HTTPS<\/figcaption><\/figure>\n<p>\u0110\u00e2y l\u00e0 ph\u1ea7n quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi ch\u1ee7 \u0111\u1ec1. T\u00ednh an to\u00e0n c\u1ee7a HTTPS kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1eddi h\u1ee9a su\u00f4ng. T\u00ednh an to\u00e0n n\u00e0y \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean ba tr\u1ee5 c\u1ed9t k\u1ef9 thu\u1eadt v\u1eefng ch\u1eafc: <strong>M\u00e3 h\u00f3a (Encryption)<\/strong>, <strong>T\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u (Data Integrity)<\/strong> v\u00e0 <strong>X\u00e1c th\u1ef1c (Authentication)<\/strong>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Du-lieu-duoc-ma-hoa-Encryption-nhu-the-nao\"><\/span>1. D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a (Encryption) nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u1ee5 c\u1ed9t \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 m\u00e3 h\u00f3a. Khi b\u1ea1n g\u1eedi d\u1eef li\u1ec7u qua HTTPS, th\u00f4ng tin s\u1ebd \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i th\u00e0nh m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 v\u00f4 ngh\u0129a tr\u01b0\u1edbc khi r\u1eddi kh\u1ecfi m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n.<\/p>\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p. V\u00ed d\u1ee5, b\u1ea1n nh\u1eadp s\u1ed1 th\u1ebb t\u00edn d\u1ee5ng l\u00e0 `1111-2222-3333-4444`. Th\u00f4ng qua l\u1edbp b\u1ea3o m\u1eadt TLS, tr\u00ecnh duy\u1ec7t s\u1ebd x\u00e1o tr\u1ed9n n\u00f3 th\u00e0nh m\u1ed9t chu\u1ed7i nh\u01b0 `xh&amp;%#klsad8923!@#$hjs`. Chu\u1ed7i n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ea3n m\u00e3 (ciphertext).<\/p>\n<p>G\u00f3i tin khi di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng m\u1ea1ng internet c\u00f4ng c\u1ed9ng s\u1ebd ch\u1ec9 hi\u1ec3n th\u1ecb chu\u1ed7i k\u00fd t\u1ef1 v\u00f4 ngh\u0129a \u0111\u00f3. Ngay c\u1ea3 khi tin t\u1eb7c ch\u1eb7n \u0111\u01b0\u1ee3c g\u00f3i tin gi\u1eefa \u0111\u01b0\u1eddng, k\u1ebb \u0111\u00f3 c\u0169ng kh\u00f4ng th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c n\u1ed9i dung b\u00ean trong. Hacker kh\u00f4ng c\u00f3 &#8220;ch\u00eca kh\u00f3a&#8221; \u0111\u1ec3 gi\u1ea3i m\u00e3 chu\u1ed7i k\u00fd t\u1ef1 h\u1ed7n \u0111\u1ed9n kia quay tr\u1edf l\u1ea1i th\u00e0nh s\u1ed1 th\u1ebb t\u00edn d\u1ee5ng ban \u0111\u1ea7u.<\/p>\n<p>HTTPS s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p hai lo\u1ea1i m\u00e3 h\u00f3a \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt:<\/p>\n<ul>\n<li><strong>M\u00e3 h\u00f3a b\u1ea5t \u0111\u1ed1i x\u1ee9ng (Asymmetric Encryption):<\/strong> S\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p kh\u00f3a bao g\u1ed3m Kh\u00f3a c\u00f4ng khai (Public Key) \u0111\u1ec3 m\u00e3 h\u00f3a v\u00e0 Kh\u00f3a b\u00ed m\u1eadt (Private Key) \u0111\u1ec3 gi\u1ea3i m\u00e3. Lo\u1ea1i n\u00e0y d\u00f9ng \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i an to\u00e0n ban \u0111\u1ea7u (g\u1ecdi l\u00e0 b\u1eaft tay &#8211; handshake).<\/li>\n<li><strong>M\u00e3 h\u00f3a \u0111\u1ed1i x\u1ee9ng (Symmetric Encryption):<\/strong> Sau khi k\u1ebft n\u1ed1i an to\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, h\u1ec7 th\u1ed1ng chuy\u1ec3n sang d\u00f9ng m\u1ed9t kh\u00f3a duy nh\u1ea5t cho c\u1ea3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-Tinh-toan-ven-cua-du-lieu-Data-Integrity-duoc-dam-bao-ra-sao\"><\/span>2. T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u (Data Integrity) \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o ra sao?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng b\u1ea1n chuy\u1ec3n kho\u1ea3n 100.000 VN\u0110. Nh\u01b0ng tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n, m\u1ed9t k\u1ebb x\u1ea5u can thi\u1ec7p v\u00e0 th\u00eam hai s\u1ed1 0 v\u00e0o, bi\u1ebfn l\u1ec7nh chuy\u1ec3n ti\u1ec1n th\u00e0nh 10.000.000 VN\u0110. N\u1ebfu s\u1eed d\u1ee5ng HTTP, h\u1ec7 th\u1ed1ng ng\u00e2n h\u00e0ng c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn ra s\u1ef1 thay \u0111\u1ed5i n\u00e0y.<\/p>\n<p>V\u1edbi HTTPS, \u0111i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3. HTTPS \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb s\u1eeda \u0111\u1ed5i, l\u00e0m h\u1ecfng ho\u1eb7c can thi\u1ec7p trong qu\u00e1 tr\u00ecnh chuy\u1ec3n t\u1eeb m\u00e1y kh\u00e1ch \u0111\u1ebfn m\u00e1y ch\u1ee7.<\/p>\n<p>C\u01a1 ch\u1ebf n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean m\u1ed9t k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 <strong>H\u00e0m b\u0103m (Hashing)<\/strong>. Tr\u01b0\u1edbc khi g\u1eedi \u0111i, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c &#8220;b\u0103m&#8221; th\u00e0nh m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 duy nh\u1ea5t (checksum). Khi m\u00e1y ch\u1ee7 nh\u1eadn \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u, m\u00e1y ch\u1ee7 c\u0169ng th\u1ef1c hi\u1ec7n l\u1ea1i thao t\u00e1c b\u0103m \u0111\u00f3. N\u1ebfu chu\u1ed7i k\u00fd t\u1ef1 t\u1ea1o ra kh\u1edbp ho\u00e0n to\u00e0n v\u1edbi chu\u1ed7i k\u00fd t\u1ef1 g\u1eedi k\u00e8m, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c coi l\u00e0 nguy\u00ean v\u1eb9n. Ch\u1ec9 c\u1ea7n m\u1ed9t d\u1ea5u ph\u1ea9y b\u1ecb thay \u0111\u1ed5i, chu\u1ed7i m\u00e3 b\u0103m s\u1ebd kh\u00e1c bi\u1ec7t ho\u00e0n to\u00e0n, v\u00e0 tr\u00ecnh duy\u1ec7t s\u1ebd l\u1eadp t\u1ee9c b\u00e1o l\u1ed7i k\u1ebft n\u1ed1i \u0111\u1ec3 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Xac-thuc-danh-tinh-Authentication-dien-ra-nhu-the-nao\"><\/span>3. X\u00e1c th\u1ef1c danh t\u00ednh (Authentication) di\u1ec5n ra nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L\u00e0m sao b\u1ea1n bi\u1ebft trang web `vietcombank.com.vn` m\u00e0 b\u1ea1n \u0111ang truy c\u1eadp l\u00e0 trang web th\u1eadt c\u1ee7a ng\u00e2n h\u00e0ng ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t trang gi\u1ea3 m\u1ea1o do hacker l\u1eadp ra? HTTPS gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y th\u00f4ng qua x\u00e1c th\u1ef1c.<\/p>\n<p>X\u00e1c th\u1ef1c \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111ang giao ti\u1ebfp v\u1edbi \u0111\u00fang \u0111\u1ed1i t\u01b0\u1ee3ng m\u00e0 b\u1ea1n mong mu\u1ed1n. \u0110\u1ec3 m\u1ed9t website c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng HTTPS, ch\u1ee7 s\u1edf h\u1eefu website \u0111\u00f3 ph\u1ea3i \u0111\u0103ng k\u00fd ch\u1ee9ng ch\u1ec9 SSL\/TLS t\u1eeb m\u1ed9t \u0111\u01a1n v\u1ecb uy t\u00edn g\u1ecdi l\u00e0 <strong>Certificate Authority (CA)<\/strong>.<\/p>\n<p>CA \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t c\u01a1 quan c\u00f4ng ch\u1ee9ng. H\u1ecd x\u00e1c minh danh t\u00ednh c\u1ee7a ch\u1ee7 s\u1edf h\u1eefu website tr\u01b0\u1edbc khi c\u1ea5p ch\u1ee9ng ch\u1ec9 s\u1ed1. Khi tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n truy c\u1eadp m\u1ed9t trang HTTPS, tr\u00ecnh duy\u1ec7t s\u1ebd ki\u1ec3m tra ch\u1ee9ng ch\u1ec9 n\u00e0y. N\u1ebfu ch\u1ee9ng ch\u1ec9 h\u1ee3p l\u1ec7 v\u00e0 \u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi m\u1ed9t CA tin c\u1eady, tr\u00ecnh duy\u1ec7t s\u1ebd hi\u1ec3n th\u1ecb \u1ed5 kh\u00f3a xanh. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1o danh.<\/p>\n<div class=\"highlight-cta-box\">\n<p><span style=\"font-size: 130%;\"><strong>B\u1ea3o M\u1eadt Website Ngay H\u00f4m Nay V\u1edbi InterData<\/strong><\/span><\/p>\n<p>B\u1ea1n mu\u1ed1n website c\u1ee7a m\u00ecnh s\u1edf h\u1eefu &#8220;\u1ed4 Kh\u00f3a Xanh&#8221; uy t\u00edn v\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ea3i trang v\u01b0\u1ee3t tr\u1ed9i? \u0110\u1eebng \u0111\u1ec3 kh\u00e1ch h\u00e0ng lo s\u1ee3 khi truy c\u1eadp trang web c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>D\u1ecbch v\u1ee5 Hosting t\u1ea1i InterData mang \u0111\u1ebfn gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n:<\/strong><\/p>\n<p>\u2705 Mi\u1ec5n ph\u00ed ch\u1ee9ng ch\u1ec9 SSL | \u2705\u1ed4 c\u1ee9ng NVMe U.2 t\u1ed1c \u0111\u1ed9 cao nh\u1ea5t hi\u1ec7n nay | \u2705 T\u00edch h\u1ee3p s\u1eb5n cPanel d\u1ec5 s\u1eed d\u1ee5ng | \u2705 Ch\u1ec9 t\u1eeb 30.000\u0111\/th\u00e1ng.<\/p>\n<p><strong><a class=\"cta-button\" href=\"https:\/\/interdata.vn\/thue-hosting\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u0110\u0103ng K\u00fd Hosting K\u00e8m SSL Mi\u1ec5n Ph\u00ed Ngay<\/a><\/strong><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Cac-rui-ro-an-ninh-mang-khi-khong-su-dung-HTTPS-la-gi\"><\/span>C\u00e1c r\u1ee7i ro an ninh m\u1ea1ng khi kh\u00f4ng s\u1eed d\u1ee5ng HTTPS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng HTTP trong k\u1ef7 nguy\u00ean s\u1ed1 hi\u1ec7n nay gi\u1ed1ng nh\u01b0 vi\u1ec7c b\u1ea1n m\u1edf toang c\u1eeda nh\u00e0 khi \u0111i ng\u1ee7. C\u00f3 v\u00f4 s\u1ed1 r\u1ee7i ro r\u00ecnh r\u1eadp, v\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a ch\u00fang th\u01b0\u1eddng r\u1ea5t nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3 ch\u1ee7 s\u1edf h\u1eefu website v\u00e0 ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan-cong-%E2%80%9CMan-in-the-Middle%E2%80%9D-MITM\"><\/span>T\u1ea5n c\u00f4ng &#8220;Man-in-the-Middle&#8221; (MITM)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 m\u1ed1i \u0111e d\u1ecda ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ebft n\u1ed1i HTTP. T\u1ea5n c\u00f4ng &#8220;Ng\u01b0\u1eddi \u0111\u1ee9ng gi\u1eefa&#8221; (Man-in-the-Middle) x\u1ea3y ra khi tin t\u1eb7c chen ngang v\u00e0o cu\u1ed9c h\u1ed9i tho\u1ea1i gi\u1eefa m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n v\u00e0 m\u00e1y ch\u1ee7 website.<\/p>\n<p>K\u1ecbch b\u1ea3n th\u01b0\u1eddng th\u1ea5y nh\u1ea5t l\u00e0 t\u1ea1i c\u00e1c qu\u00e1n c\u00e0 ph\u00ea ho\u1eb7c s\u00e2n bay cung c\u1ea5p Wifi c\u00f4ng c\u1ed9ng mi\u1ec5n ph\u00ed. Hacker c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m ph\u00e1t Wifi gi\u1ea3 m\u1ea1o ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 d\u00f2 qu\u00e9t m\u1ea1ng (sniffing tools) tr\u00ean c\u00f9ng m\u1ea1ng Wifi \u0111\u00f3. N\u1ebfu b\u1ea1n truy c\u1eadp m\u1ed9t trang web HTTP qua m\u1ea1ng n\u00e0y, m\u1ecdi th\u00f4ng tin b\u1ea1n g\u1eedi \u0111i \u2013 t\u1eeb n\u1ed9i dung email, cookie \u0111\u0103ng nh\u1eadp cho \u0111\u1ebfn m\u1eadt kh\u1ea9u \u2013 \u0111\u1ec1u l\u1ecdt v\u00e0o tay hacker. Ch\u00fang c\u00f3 th\u1ec3 \u00e2m th\u1ea7m thu th\u1eadp d\u1eef li\u1ec7u n\u00e0y m\u00e0 b\u1ea1n kh\u00f4ng h\u1ec1 hay bi\u1ebft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nguy-co-bi-tiem-nhiem-ma-doc-Injection-Attacks\"><\/span>Nguy c\u01a1 b\u1ecb ti\u00eam nhi\u1ec5m m\u00e3 \u0111\u1ed9c (Injection Attacks)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng ch\u1ec9 \u0111\u00e1nh c\u1eafp th\u00f4ng tin, k\u1ebb t\u1ea5n c\u00f4ng \u0111\u1ee9ng gi\u1eefa c\u00f2n c\u00f3 th\u1ec3 thay \u0111\u1ed5i n\u1ed9i dung trang web m\u00e0 b\u1ea1n nh\u00ecn th\u1ea5y. V\u1edbi k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt, hacker c\u00f3 th\u1ec3 ch\u00e8n qu\u1ea3ng c\u00e1o \u0111\u1ed9c h\u1ea1i, ph\u1ea7n m\u1ec1m gi\u00e1n \u0111i\u1ec7p (spyware) ho\u1eb7c m\u00e3 \u0111\u1ed9c (malware) v\u00e0o trang web h\u1ee3p ph\u00e1p m\u00e0 b\u1ea1n \u0111ang xem.<\/p>\n<p>V\u00ed d\u1ee5, b\u1ea1n \u0111ang \u0111\u1ecdc b\u00e1o tr\u00ean m\u1ed9t trang tin t\u1ee9c uy t\u00edn nh\u01b0ng kh\u00f4ng d\u00f9ng HTTPS. Hacker c\u00f3 th\u1ec3 ch\u00e8n m\u1ed9t c\u1eeda s\u1ed5 b\u1eadt l\u00ean (popup) y\u00eau c\u1ea7u b\u1ea1n t\u1ea3i xu\u1ed1ng m\u1ed9t b\u1ea3n c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m gi\u1ea3 m\u1ea1o. Khi b\u1ea1n nh\u1ea5p v\u00e0o, m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n s\u1ebd b\u1ecb nhi\u1ec5m virus. \u0110i\u1ec1u \u0111\u00e1ng s\u1ee3 l\u00e0 trang web g\u1ed1c kh\u00f4ng h\u1ec1 bi\u1ebft vi\u1ec7c n\u00e0y \u0111ang x\u1ea3y ra v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gia-mao-website-Phishing\"><\/span>Gi\u1ea3 m\u1ea1o website (Phishing)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1eb7c d\u00f9 HTTPS kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n Phishing, nh\u01b0ng vi\u1ec7c thi\u1ebfu HTTPS khi\u1ebfn vi\u1ec7c gi\u1ea3 m\u1ea1o tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n bao gi\u1edd h\u1ebft. Ng\u01b0\u1eddi d\u00f9ng ng\u00e0y c\u00e0ng c\u1ea3nh gi\u00e1c h\u01a1n v\u00e0 th\u01b0\u1eddng t\u00ecm ki\u1ebfm bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a tr\u01b0\u1edbc khi nh\u1eadp th\u00f4ng tin. M\u1ed9t trang web kh\u00f4ng c\u00f3 HTTPS ngay l\u1eadp t\u1ee9c t\u1ea1o ra c\u1ea3m gi\u00e1c thi\u1ebfu chuy\u00ean nghi\u1ec7p v\u00e0 \u0111\u00e1ng ng\u1edd.<\/p>\n<p>C\u00e1c tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u1ea1i nh\u01b0 Google Chrome, Firefox hay Safari \u0111ang r\u1ea5t m\u1ea1nh tay v\u1edbi v\u1ea5n \u0111\u1ec1 n\u00e0y. N\u1ebfu trang web c\u1ee7a b\u1ea1n c\u00f3 \u00f4 nh\u1eadp li\u1ec7u (nh\u01b0 \u00f4 t\u00ecm ki\u1ebfm ho\u1eb7c \u0111\u0103ng nh\u1eadp) m\u00e0 v\u1eabn d\u00f9ng HTTP, tr\u00ecnh duy\u1ec7t s\u1ebd \u0111\u00e1nh d\u1ea5u &#8220;Not Secure&#8221; r\u1ea5t n\u1ed5i b\u1eadt. \u0110i\u1ec1u n\u00e0y tr\u1ef1c ti\u1ebfp \u0111u\u1ed5i kh\u00e1ch h\u00e0ng \u0111i ngay khi h\u1ecd v\u1eeba \u0111\u1eb7t ch\u00e2n \u0111\u1ebfn.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Loi-ich-thuc-te-cua-HTTPS-ngoai-van-de-bao-mat\"><\/span>L\u1ee3i \u00edch th\u1ef1c t\u1ebf c\u1ee7a HTTPS ngo\u00e0i v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_38486\" aria-describedby=\"caption-attachment-38486\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38486\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-1.webp\" alt=\"HTTPS\" width=\"750\" height=\"409\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-1.webp 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2026\/01\/HTTPS-1-300x164.webp 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-38486\" class=\"wp-caption-text\">HTTPS<\/figcaption><\/figure>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi l\u1ea7m t\u01b0\u1edfng r\u1eb1ng ch\u1ec9 c\u00e1c trang web th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ho\u1eb7c ng\u00e2n h\u00e0ng m\u1edbi c\u1ea7n HTTPS. \u0110\u00e2y l\u00e0 m\u1ed9t quan ni\u1ec7m sai l\u1ea7m nghi\u00eam tr\u1ecdng. HTTPS mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch to l\u1edbn v\u01b0\u1ee3t xa ph\u1ea1m vi b\u1ea3o m\u1eadt d\u1eef li\u1ec7u, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 kinh doanh v\u00e0 ti\u1ebfp th\u1ecb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"HTTPS-la-tin-hieu-xep-hang-quan-trong-cua-Google-SEO\"><\/span>HTTPS l\u00e0 t\u00edn hi\u1ec7u x\u1ebfp h\u1ea1ng quan tr\u1ecdng c\u1ee7a Google (SEO)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n quan t\u00e2m \u0111\u1ebfn vi\u1ec7c website c\u1ee7a m\u00ecnh xu\u1ea5t hi\u1ec7n tr\u00ean trang nh\u1ea5t c\u1ee7a Google, b\u1ea1n bu\u1ed9c ph\u1ea3i d\u00f9ng HTTPS. T\u1eeb n\u0103m 2014, Google \u0111\u00e3 ch\u00ednh th\u1ee9c c\u00f4ng b\u1ed1 HTTPS l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u d\u00f9ng \u0111\u1ec3 x\u1ebfp h\u1ea1ng t\u00ecm ki\u1ebfm (Ranking Signal).<\/p>\n<p>Google mu\u1ed1n \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m an to\u00e0n cho ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd. Do \u0111\u00f3, gi\u1eefa hai trang web c\u00f3 n\u1ed9i dung v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, trang web n\u00e0o s\u1eed d\u1ee5ng HTTPS s\u1ebd \u0111\u01b0\u1ee3c Google \u01b0u ti\u00ean x\u1ebfp h\u1ea1ng cao h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c trang web HTTP ng\u00e0y c\u00e0ng b\u1ecb \u0111\u1ea9y xu\u1ed1ng th\u1ea5p trong k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm.<\/p>\n<p>H\u01a1n n\u1eefa, c\u00e1c t\u00ednh n\u0103ng hi\u1ec7n \u0111\u1ea1i c\u1ee7a Google nh\u01b0 Voice Search (T\u00ecm ki\u1ebfm b\u1eb1ng gi\u1ecdng n\u00f3i) hay hi\u1ec3n th\u1ecb tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng (Mobile-first indexing) \u0111\u1ec1u \u01b0u \u00e1i c\u00e1c trang web b\u1ea3o m\u1eadt. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang HTTPS l\u00e0 b\u01b0\u1edbc \u0111i n\u1ec1n t\u1ea3ng cho b\u1ea5t k\u1ef3 chi\u1ebfn l\u01b0\u1ee3c SEO th\u00e0nh c\u00f4ng n\u00e0o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-ty-le-chuyen-doi-CR-va-niem-tin-nguoi-dung\"><\/span>T\u0103ng t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i (CR) v\u00e0 ni\u1ec1m tin ng\u01b0\u1eddi d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ni\u1ec1m tin l\u00e0 \u0111\u01a1n v\u1ecb ti\u1ec1n t\u1ec7 qu\u00fd gi\u00e1 nh\u1ea5t tr\u00ean Internet. Kh\u00e1ch h\u00e0ng s\u1ebd kh\u00f4ng bao gi\u1edd r\u00fat v\u00ed tr\u1ea3 ti\u1ec1n tr\u00ean m\u1ed9t trang web b\u1ecb tr\u00ecnh duy\u1ec7t c\u1ea3nh b\u00e1o l\u00e0 &#8220;Kh\u00f4ng an to\u00e0n&#8221;.<\/p>\n<p>Bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a xanh mang l\u1ea1i hi\u1ec7u \u1ee9ng t\u00e2m l\u00fd t\u00edch c\u1ef1c. Ng\u01b0\u1eddi d\u00f9ng c\u1ea3m th\u1ea5y an t\u00e2m h\u01a1n khi duy\u1ec7t web, d\u1eabn \u0111\u1ebfn th\u1eddi gian \u1edf l\u1ea1i trang (Time on Site) l\u00e2u h\u01a1n v\u00e0 t\u1ef7 l\u1ec7 tho\u00e1t (Bounce Rate) th\u1ea5p h\u01a1n. \u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p, \u0111i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i t\u1eeb ng\u01b0\u1eddi xem th\u00e0nh kh\u00e1ch h\u00e0ng s\u1ebd t\u0103ng l\u00ean r\u00f5 r\u1ec7t.<\/p>\n<p>C\u00e1c nghi\u00ean c\u1ee9u h\u00e0nh vi cho th\u1ea5y ng\u01b0\u1eddi d\u00f9ng c\u00f3 xu h\u01b0\u1edbng h\u1ee7y b\u1ecf giao d\u1ecbch ngay l\u1eadp t\u1ee9c n\u1ebfu h\u1ecd kh\u00f4ng nh\u00ecn th\u1ea5y c\u00e1c d\u1ea5u hi\u1ec7u b\u1ea3o m\u1eadt \u1edf b\u01b0\u1edbc thanh to\u00e1n. V\u00ec v\u1eady, HTTPS t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn doanh thu c\u1ee7a b\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cai-thien-toc-do-tai-trang-voi-HTTP2\"><\/span>C\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ea3i trang v\u1edbi HTTP\/2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t l\u1ee3i \u00edch k\u1ef9 thu\u1eadt m\u00e0 \u00edt ng\u01b0\u1eddi bi\u1ebft \u0111\u1ebfn. Giao th\u1ee9c HTTP c\u0169 (HTTP\/1.1) c\u00f3 nhi\u1ec1u h\u1ea1n ch\u1ebf v\u1ec1 hi\u1ec7u su\u1ea5t t\u1ea3i trang. Giao th\u1ee9c m\u1edbi h\u01a1n l\u00e0 HTTP\/2 ra \u0111\u1eddi v\u1edbi kh\u1ea3 n\u0103ng t\u1ea3i song song nhi\u1ec1u t\u00e0i nguy\u00ean c\u00f9ng l\u00fac, gi\u00fap website nhanh h\u01a1n \u0111\u00e1ng k\u1ec3.<\/p>\n<p>\u0110i\u1ec1u quan tr\u1ecdng l\u00e0: C\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 bi\u1ebfn hi\u1ec7n nay ch\u1ec9 h\u1ed7 tr\u1ee3 HTTP\/2 khi website ch\u1ea1y tr\u00ean n\u1ec1n t\u1ea3ng HTTPS. Ngh\u0129a l\u00e0, n\u1ebfu b\u1ea1n mu\u1ed1n website c\u1ee7a m\u00ecnh t\u1ea3i nhanh &#8220;nh\u01b0 gi\u00f3&#8221; v\u1edbi c\u00f4ng ngh\u1ec7 m\u1edbi nh\u1ea5t, b\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i c\u00e0i \u0111\u1eb7t SSL. T\u1ed1c \u0111\u1ed9 t\u1ea3i trang nhanh h\u01a1n c\u0169ng \u0111\u1ed3ng ngh\u0129a v\u1edbi tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng t\u1ed1t h\u01a1n v\u00e0 th\u1ee9 h\u1ea1ng SEO cao h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-cau-hoi-thuong-gap-FAQs\"><\/span>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh t\u01b0 v\u1ea5n v\u00e0 tri\u1ec3n khai d\u1ecbch v\u1ee5 cho kh\u00e1ch h\u00e0ng, InterData th\u01b0\u1eddng xuy\u00ean nh\u1eadn \u0111\u01b0\u1ee3c nh\u1eefng th\u1eafc m\u1eafc xoay quanh vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang HTTPS. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chuyen-tu-HTTP-sang-HTTPS-co-lam-giam-toc-do-website-khong\"><\/span>Chuy\u1ec3n t\u1eeb HTTP sang HTTPS c\u00f3 l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 website kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u01b0\u1edbc \u0111\u00e2y, qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 c\u00f3 th\u1ec3 g\u00e2y ra m\u1ed9t ch\u00fat \u0111\u1ed9 tr\u1ec5 nh\u1ecf. Tuy nhi\u00ean, v\u1edbi c\u00f4ng ngh\u1ec7 ph\u1ea7n c\u1ee9ng m\u00e1y ch\u1ee7 hi\u1ec7n \u0111\u1ea1i v\u00e0 s\u1ef1 ra \u0111\u1eddi c\u1ee7a giao th\u1ee9c HTTP\/2 (nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean), website s\u1eed d\u1ee5ng HTTPS hi\u1ec7n nay th\u01b0\u1eddng c\u00f3 t\u1ed1c \u0111\u1ed9 t\u1ea3i nhanh h\u01a1n so v\u1edbi HTTP th\u00f4ng th\u01b0\u1eddng. Qu\u00e1 tr\u00ecnh b\u1eaft tay (handshake) TLS c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a r\u1ea5t nhi\u1ec1u trong c\u00e1c phi\u00ean b\u1ea3n m\u1edbi nh\u01b0 TLS 1.3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"HTTPS-co-bao-ve-website-khoi-bi-hack-100-khong\"><\/span>HTTPS c\u00f3 b\u1ea3o v\u1ec7 website kh\u1ecfi b\u1ecb hack 100% kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng. \u0110\u00e2y l\u00e0 s\u1ef1 nh\u1ea7m l\u1eabn tai h\u1ea1i. HTTPS ch\u1ec9 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 (data in transit). N\u00f3 gi\u1ed1ng nh\u01b0 chi\u1ebfc xe b\u1ecdc th\u00e9p v\u1eadn chuy\u1ec3n ti\u1ec1n.<\/p>\n<p>Tuy nhi\u00ean, n\u1ebfu ch\u00ednh &#8220;kho ti\u1ec1n&#8221; (m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef web) c\u00f3 l\u1ed7 h\u1ed5ng, ho\u1eb7c &#8220;ng\u01b0\u1eddi gi\u1eef ch\u00eca kh\u00f3a&#8221; (qu\u1ea3n tr\u1ecb vi\u00ean) \u0111\u1eb7t m\u1eadt kh\u1ea9u qu\u00e1 y\u1ebfu, hacker v\u1eabn c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp. Website v\u1eabn c\u1ea7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt kh\u00e1c nh\u01b0 t\u01b0\u1eddng l\u1eeda (Firewall), qu\u00e9t m\u00e3 \u0111\u1ed9c v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 an to\u00e0n to\u00e0n di\u1ec7n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chung-chi-SSL-mien-phi-Lets-Encrypt-co-an-toan-nhu-ban-tra-phi-khong\"><\/span>Ch\u1ee9ng ch\u1ec9 SSL mi\u1ec5n ph\u00ed (Let&#8217;s Encrypt) c\u00f3 an to\u00e0n nh\u01b0 b\u1ea3n tr\u1ea3 ph\u00ed kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a, ch\u1ee9ng ch\u1ec9 mi\u1ec5n ph\u00ed (nh\u01b0 lo\u1ea1i InterData cung c\u1ea5p k\u00e8m g\u00f3i Hosting) cung c\u1ea5p m\u1ee9c \u0111\u1ed9 m\u00e3 h\u00f3a an to\u00e0n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed. D\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 tuy\u1ec7t \u0111\u1ed1i.<\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf kh\u00e2u x\u00e1c minh danh t\u00ednh v\u00e0 b\u1ea3o hi\u1ec3m. C\u00e1c ch\u1ee9ng ch\u1ec9 tr\u1ea3 ph\u00ed cao c\u1ea5p (nh\u01b0 EV SSL &#8211; hi\u1ec7n thanh \u0111\u1ecba ch\u1ec9 m\u00e0u xanh l\u00e1 c\u00e2y k\u00e8m t\u00ean c\u00f4ng ty) y\u00eau c\u1ea7u quy tr\u00ecnh x\u00e1c minh doanh nghi\u1ec7p nghi\u00eam ng\u1eb7t h\u01a1n v\u00e0 \u0111i k\u00e8m g\u00f3i b\u1ea3o hi\u1ec3m t\u00e0i ch\u00ednh n\u1ebfu c\u00f3 s\u1ef1 c\u1ed1 r\u00f2 r\u1ec9 d\u1eef li\u1ec7u x\u1ea3y ra. \u0110\u1ed1i v\u1edbi c\u00e1c blog c\u00e1 nh\u00e2n hay website doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf, SSL mi\u1ec5n ph\u00ed l\u00e0 \u0111\u1ee7 ti\u00eau chu\u1ea9n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lam-sao-de-biet-mot-website-co-dung-HTTPS-hay-khong\"><\/span>L\u00e0m sao \u0111\u1ec3 bi\u1ebft m\u1ed9t website c\u00f3 d\u00f9ng HTTPS hay kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 nh\u00ecn v\u00e0o thanh \u0111\u1ecba ch\u1ec9 c\u1ee7a tr\u00ecnh duy\u1ec7t. N\u1ebfu \u0111\u01b0\u1eddng d\u1eabn b\u1eaft \u0111\u1ea7u b\u1eb1ng <code>https:\/\/<\/code> thay v\u00ec <code>http:\/\/<\/code>, v\u00e0 c\u00f3 bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a \u0111\u00f3ng k\u00edn b\u00ean c\u1ea1nh, trang web \u0111\u00f3 \u0111ang s\u1eed d\u1ee5ng HTTPS. B\u1ea1n c\u00f3 th\u1ec3 nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a \u0111\u1ec3 xem chi ti\u1ebft th\u00f4ng tin v\u1ec1 ch\u1ee9ng ch\u1ec9 s\u1ed1 v\u00e0 \u0111\u01a1n v\u1ecb c\u1ea5p ph\u00e1t.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Loi-ket\"><\/span>L\u1eddi k\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Qua nh\u1eefng ph\u00e2n t\u00edch chi ti\u1ebft \u1edf tr\u00ean, ch\u00fang ta \u0111\u00e3 c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi r\u00f5 r\u00e0ng cho c\u00e2u h\u1ecfi &#8220;T\u1ea1i sao truy c\u1eadp website b\u1eb1ng HTTPS l\u1ea1i an to\u00e0n h\u01a1n?&#8221;. Kh\u00f4ng ch\u1ec9 d\u1eebng l\u1ea1i \u1edf vi\u1ec7c m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u0111\u1ec3 ch\u1ed1ng nghe l\u00e9n, HTTPS c\u00f2n \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a th\u00f4ng tin v\u00e0 x\u00e1c th\u1ef1c danh t\u00ednh c\u1ee7a website m\u00e0 b\u1ea1n truy c\u1eadp.<\/p>\n<p>Trong b\u1ed1i c\u1ea3nh an ninh m\u1ea1ng ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p, HTTPS kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn xa x\u1ec9, m\u00e0 l\u00e0 ti\u00eau chu\u1ea9n s\u1ed1ng c\u00f2n. Giao th\u1ee9c n\u00e0y b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng, b\u1ea3o v\u1ec7 uy t\u00edn th\u01b0\u01a1ng hi\u1ec7u v\u00e0 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n kinh doanh b\u1ec1n v\u1eefng tr\u00ean Internet.<\/p>\n<p>N\u1ebfu website c\u1ee7a b\u1ea1n v\u1eabn \u0111ang s\u1eed d\u1ee5ng giao th\u1ee9c HTTP c\u0169 k\u1ef9, h\u00e3y h\u00e0nh \u0111\u1ed9ng ngay l\u1eadp t\u1ee9c. Vi\u1ec7c n\u00e2ng c\u1ea5p l\u00ean HTTPS hi\u1ec7n nay r\u1ea5t \u0111\u01a1n gi\u1ea3n, nhanh ch\u00f3ng v\u00e0 chi ph\u00ed c\u1ef1c k\u1ef3 h\u1ee3p l\u00fd, th\u1eadm ch\u00ed l\u00e0 mi\u1ec5n ph\u00ed t\u1ea1i nhi\u1ec1u nh\u00e0 cung c\u1ea5p uy t\u00edn.<\/p>\n<p>H\u00e3y bi\u1ebfn m\u00f4i tr\u01b0\u1eddng Internet th\u00e0nh m\u1ed9t n\u01a1i an to\u00e0n h\u01a1n cho ch\u00ednh b\u1ea1n v\u00e0 kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n ngay t\u1eeb h\u00f4m nay b\u1eb1ng nh\u1eefng \u1ed5 kh\u00f3a xanh v\u1eefng ch\u1eafc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd \u0111\u1ec3 \u00fd \u0111\u1ebfn m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng \u1ed5 kh\u00f3a nh\u1ecf m\u00e0u xanh l\u00e1 c\u00e2y n\u1eb1m ngay c\u1ea1nh thanh \u0111\u1ecba ch\u1ec9 tr\u00ecnh duy\u1ec7t ch\u01b0a? Ho\u1eb7c c\u00f3 l\u1ebd b\u1ea1n \u0111\u00e3 th\u1ea5y d\u00f2ng ch\u1eef c\u1ea3nh b\u00e1o &#8220;Not Secure&#8221; (Kh\u00f4ng b\u1ea3o m\u1eadt) m\u00e0u \u0111\u1ecf \u0111\u00e1ng s\u1ee3 khi truy c\u1eadp v\u00e0o m\u1ed9t trang web n\u00e0o \u0111\u00f3? Nh\u1eefng<\/p>\n","protected":false},"author":2,"featured_media":38485,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-38455","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bao-mat-an-ninh-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=38455"}],"version-history":[{"count":3,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38455\/revisions"}],"predecessor-version":[{"id":38488,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/38455\/revisions\/38488"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/38485"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=38455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=38455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=38455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}