Giao thức HTTP và HTTPS là gì? Tại sao nên sử dụng HTTPS?

{"success":true,"head":"<title>Giao thức HTTP và HTTPS là gì? Tại sao nên sử dụng HTTPS?</title>\n<meta name=\"description\" content=\"Giao thức HTTPS đã được sử dụng bởi hơn một nửa số website trên toàn thế giới. Vậy HTTPS là gì và giao thức này đã bảo vệ người truy cập như thế nào?\"/>\n<meta name=\"robots\" content=\"nofollow, noindex\"/>\n<meta property=\"og:locale\" content=\"en_US\" />\n<meta property=\"og:type\" content=\"article\" />\n<meta property=\"og:title\" content=\"Giao thức HTTP và HTTPS là gì? Tại sao nên sử dụng HTTPS?\" />\n<meta property=\"og:description\" content=\"Giao thức HTTPS đã được sử dụng bởi hơn một nửa số website trên toàn thế giới. Vậy HTTPS là gì và giao thức này đã bảo vệ người truy cập như thế nào?\" />\n<meta property=\"og:url\" content=\"https://blog.cystack.org/vi/blog/2025/09/17/http-va-https-la-gi/\" />\n<meta property=\"og:site_name\" content=\"CyStack Blog\" />\n<meta property=\"article:tag\" content=\"chứng chỉ ssl\" />\n<meta property=\"article:tag\" content=\"HTTPS\" />\n<meta property=\"article:tag\" content=\"tường lửa\" />\n<meta property=\"article:tag\" content=\"vi\" />\n<meta property=\"article:section\" content=\"Bảo mật dữ liệu\" />\n<meta property=\"og:updated_time\" content=\"2026-05-06T18:10:43+07:00\" />\n<meta property=\"og:image\" content=\"https://s.cystack.net/resource/home/content/05142915/EN_HTTPvsHTTPS_blog.jpg\" />\n<meta property=\"og:image:secure_url\" content=\"https://s.cystack.net/resource/home/content/05142915/EN_HTTPvsHTTPS_blog.jpg\" />\n<meta property=\"og:image:width\" content=\"600\" />\n<meta property=\"og:image:height\" content=\"300\" />\n<meta property=\"og:image:alt\" content=\"https là gì\" />\n<meta property=\"og:image:type\" content=\"image/jpeg\" />\n<meta property=\"article:published_time\" content=\"2025-09-17T18:33:00+07:00\" />\n<meta property=\"article:modified_time\" content=\"2026-05-06T18:10:43+07:00\" />\n<meta name=\"twitter:card\" content=\"summary_large_image\" />\n<meta name=\"twitter:title\" content=\"Giao thức HTTP và HTTPS là gì? Tại sao nên sử dụng HTTPS?\" />\n<meta name=\"twitter:description\" content=\"Giao thức HTTPS đã được sử dụng bởi hơn một nửa số website trên toàn thế giới. Vậy HTTPS là gì và giao thức này đã bảo vệ người truy cập như thế nào?\" />\n<meta name=\"twitter:image\" content=\"https://s.cystack.net/resource/home/content/05142915/EN_HTTPvsHTTPS_blog.jpg\" />\n<meta name=\"twitter:label1\" content=\"Written by\" />\n<meta name=\"twitter:data1\" content=\"LinhDTM\" />\n<meta name=\"twitter:label2\" content=\"Time to read\" />\n<meta name=\"twitter:data2\" content=\"11 minutes\" />\n<script type=\"application/ld+json\" class=\"rank-math-schema\">{\"@context\":\"https://schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https://blog.cystack.org/#organization\",\"name\":\"CyStack\",\"url\":\"https://blog.cystack.org\"},{\"@type\":\"WebSite\",\"@id\":\"https://blog.cystack.org/#website\",\"url\":\"https://blog.cystack.org\",\"name\":\"CyStack\",\"publisher\":{\"@id\":\"https://blog.cystack.org/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https://s.cystack.net/resource/home/content/05142915/EN_HTTPvsHTTPS_blog.jpg\",\"url\":\"https://s.cystack.net/resource/home/content/05142915/EN_HTTPvsHTTPS_blog.jpg\",\"width\":\"600\",\"height\":\"300\",\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https://blog.cystack.org/vi/blog/2025/09/17/http-va-https-la-gi/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":\"1\",\"item\":{\"@id\":\"https://blog.cystack.org\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":\"2\",\"item\":{\"@id\":\"https://blog.cystack.org/vi/blog/2025/09/17/http-va-https-la-gi/\",\"name\":\"Giao th\\u1ee9c HTTP v\\u00e0 HTTPS l\\u00e0 g\\u00ec? 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