Tấn công SQL injection là gì? Nguy hiểm đến mức nào và làm sao để phòng tránh?

{"success":true,"head":"<title>Tấn công SQL injection là gì? Cách thức phòng tránh triệt để</title>\n<meta name=\"description\" content=\"Trong tất cả các cuộc tấn công nhằm vào website, tấn công SQL Injection là một trong những loại nguy hiểm và phổ biến nhất, nó đã gây ra những thiệt hại đáng kể cho nhiều doanh nghiệp và tổ chức trong những năm qua.\"/>\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=\"Tấn công SQL injection là gì? Cách thức phòng tránh triệt để\" />\n<meta property=\"og:description\" content=\"Trong tất cả các cuộc tấn công nhằm vào website, tấn công SQL Injection là một trong những loại nguy hiểm và phổ biến nhất, nó đã gây ra những thiệt hại đáng kể cho nhiều doanh nghiệp và tổ chức trong những năm qua.\" />\n<meta property=\"og:url\" content=\"https://blog.cystack.org/vi/blog/2023/09/14/tan-cong-sql-injection/\" />\n<meta property=\"og:site_name\" content=\"CyStack Blog\" />\n<meta property=\"article:author\" content=\"CEO@CyStack\" />\n<meta property=\"article:tag\" content=\"CyStack Platform\" />\n<meta property=\"article:tag\" content=\"lỗ hổng SQL Injection\" />\n<meta property=\"article:tag\" content=\"quét lỗ hổng\" />\n<meta property=\"article:tag\" content=\"quét lôc hổng SQL Injection\" />\n<meta property=\"article:tag\" content=\"SQL Injection\" />\n<meta property=\"article:tag\" content=\"tấn công SQL Injection\" />\n<meta property=\"article:tag\" content=\"vi\" />\n<meta property=\"article:section\" content=\"An toàn vận hành\" />\n<meta property=\"og:updated_time\" content=\"2026-05-06T18:00:45+07:00\" />\n<meta property=\"og:image\" content=\"https://s.cystack.net/resource/home/content/05145151/Hinh-anh-1.-Form-ang-nhap-gom-2-input-username-va-password.jpg\" />\n<meta property=\"og:image:secure_url\" content=\"https://s.cystack.net/resource/home/content/05145151/Hinh-anh-1.-Form-ang-nhap-gom-2-input-username-va-password.jpg\" />\n<meta property=\"og:image:width\" content=\"342\" />\n<meta property=\"og:image:height\" content=\"307\" />\n<meta property=\"og:image:alt\" content=\"tấn công SQL Injection\" />\n<meta property=\"og:image:type\" content=\"image/jpeg\" />\n<meta property=\"article:published_time\" content=\"2023-09-14T16:44:39+07:00\" />\n<meta property=\"article:modified_time\" content=\"2026-05-06T18:00:45+07:00\" />\n<meta name=\"twitter:card\" content=\"summary_large_image\" />\n<meta name=\"twitter:title\" content=\"Tấn công SQL injection là gì? Cách thức phòng tránh triệt để\" />\n<meta name=\"twitter:description\" content=\"Trong tất cả các cuộc tấn công nhằm vào website, tấn công SQL Injection là một trong những loại nguy hiểm và phổ biến nhất, nó đã gây ra những thiệt hại đáng kể cho nhiều doanh nghiệp và tổ chức trong những năm qua.\" />\n<meta name=\"twitter:image\" content=\"https://s.cystack.net/resource/home/content/05145151/Hinh-anh-1.-Form-ang-nhap-gom-2-input-username-va-password.jpg\" />\n<meta name=\"twitter:label1\" content=\"Written by\" />\n<meta name=\"twitter:data1\" content=\"Trung Nguyen\" />\n<meta name=\"twitter:label2\" content=\"Time to read\" />\n<meta name=\"twitter:data2\" content=\"14 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/05145151/Hinh-anh-1.-Form-ang-nhap-gom-2-input-username-va-password.jpg\",\"url\":\"https://s.cystack.net/resource/home/content/05145151/Hinh-anh-1.-Form-ang-nhap-gom-2-input-username-va-password.jpg\",\"width\":\"342\",\"height\":\"307\",\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https://blog.cystack.org/vi/blog/2023/09/14/tan-cong-sql-injection/#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/2023/09/14/tan-cong-sql-injection/\",\"name\":\"T\\u1ea5n c\\u00f4ng SQL injection l\\u00e0 g\\u00ec? 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