{"id":9079,"date":"2022-09-13T20:32:05","date_gmt":"2022-09-13T13:32:05","guid":{"rendered":"https:\/\/teky.edu.vn\/blog\/?p=9079"},"modified":"2023-10-20T09:31:12","modified_gmt":"2023-10-20T02:31:12","slug":"sql-injection-la-gi","status":"publish","type":"post","link":"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/","title":{"rendered":"SQL Injection l\u00e0 g\u00ec? 3 c\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection hi\u1ec7u qu\u1ea3"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;9079&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;4&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;5\\\/5 - (4 b\u00ecnh ch\u1ecdn)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;SQL Injection l\u00e0 g\u00ec? 3 c\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection hi\u1ec7u qu\u1ea3&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (4 b\u00ecnh ch\u1ecdn)    <\/div>\n    <\/div>\n<p style=\"text-align: justify;\"><em>SQL Injection \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 m\u1ed9t c\u00e1ch t\u1ea5n c\u00f4ng kho d\u1eef li\u1ec7u SQL v\u00f4 c\u00f9ng nguy hi\u1ec3m. Nh\u1eefng h\u1eadu qu\u1ea3 n\u00f3 \u0111\u1ec3 l\u1ea1i l\u00e0 v\u00f4 c\u00f9ng to l\u1edbn. Trong th\u1eddi gian g\u1ea7n \u0111\u00e2y, r\u1ea5t nhi\u1ec1u c\u00f4ng ty v\u00e0 doanh nghi\u1ec7p ph\u1ea3i ch\u1ecbu nh\u1eefng t\u1ed5n th\u1ea5t \u0111\u00e1ng k\u1ec3 b\u1edfi SQL Injection. \u0110\u1ec3 ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c l\u1ed7 h\u1ed5ng n\u00e0y, tr\u01b0\u1edbc ti\u00ean b\u1ea1n ph\u1ea3i n\u1eafm r\u00f5<strong> SQL Injection l\u00e0 g\u00ec<\/strong> c\u0169ng nh\u01b0 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m t\u1ea5n c\u00f4ng c\u1ee7a n\u00f3. H\u00e3y c\u00f9ng Teky tham kh\u1ea3o ngay trong b\u00e0i vi\u1ebft sau \u0111\u00e2y.<\/em><\/p>\n<p><a href=\"https:\/\/lotrinhlaptrinh.teky.vn\/?utm_id=ContentBlog&amp;utm_medium=Click_Blog&amp;utm_source=ContentBlog\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-22416\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2023\/10\/dang-ky-lap-trinh-teky.gif\" alt=\"dang-ky-lap-trinh\" width=\"600\" height=\"314\" \/><\/a><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i 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 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#SQL_Injection_la_gi\" >SQL Injection l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Cach_thuc_tan_cong_cua_SQL_Injection_la_gi\" >C\u00e1ch th\u1ee9c t\u1ea5n c\u00f4ng c\u1ee7a SQL Injection 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-3\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#In-band_SQLi\" >In-band SQLi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Inferential_Blind_SQLi_%E2%80%93_SQL_Injection_la_gi\" >Inferential (Blind) SQLi &#8211; SQL Injection l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Out-of-band_SQLi\" >Out-of-band SQLi<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Cach_phong_chong_SQL_Injection_la_gi\" >C\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection 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-7\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Khong_tin_tuong_kenh_Input_cua_nguoi_dung\" >Kh\u00f4ng tin t\u01b0\u1edfng k\u00eanh Input c\u1ee7a 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-8\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Xac_nhan_chuoi_cac_input_o_phia_may_chu_%E2%80%93_SQL_Injection_la_gi\" >X\u00e1c nh\u1eadn chu\u1ed7i c\u00e1c input \u1edf ph\u00eda m\u00e1y ch\u1ee7 &#8211; SQL Injection l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Su_dung_cac_cau_lenh_tham_so\" >S\u1eed d\u1ee5ng c\u00e1c c\u00e2u l\u1ec7nh tham s\u1ed1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Ket_luan_SQL_Injection_la_gi\" >K\u1ebft lu\u1eadn SQL Injection l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Hoc_vien_cong_nghe_Teky_la_noi_hoc_lap_trinh_hang_dau_Viet_Nam\" >H\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 Teky l\u00e0 n\u01a1i h\u1ecdc l\u1eadp tr\u00ecnh h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Day_la_chuong_trinh_khong_chi_trang_bi_kien_thuc_lap_trinh_ma_con_ren_luyen_nhom_ky_nang_4Cs_Tre_se_duoc\" >\u0110\u00e2y l\u00e0 ch\u01b0\u01a1ng tr\u00ecnh kh\u00f4ng ch\u1ec9 trang b\u1ecb ki\u1ebfn th\u1ee9c l\u1eadp tr\u00ecnh m\u00e0 c\u00f2n r\u00e8n luy\u1ec7n nh\u00f3m k\u1ef9 n\u0103ng 4Cs. Tr\u1ebb s\u1ebd \u0111\u01b0\u1ee3c:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/teky.edu.vn\/blog\/sql-injection-la-gi\/#Lien_he_ngay_hoc_vien_cong_nghe_sang_tao_TEKY_de_duoc_tu_van_khoa_hoc\" >Li\u00ean h\u1ec7 ngay h\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 s\u00e1ng t\u1ea1o TEKY \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n kh\u00f3a h\u1ecdc:<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"SQL_Injection_la_gi\"><\/span>SQL Injection l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">L\u1ed7i SQL Injection l\u00e0 m\u1ed9t d\u1ea1ng t\u1ea5n c\u00f4ng th\u00f4ng qua nh\u1eefng l\u1ed7 h\u1ed5ng trong b\u1ea3o m\u1eadt d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch ch\u00e8n c\u00e1c \u0111o\u1ea1n m\u00e3 v\u00e0o trong entry field, hacker s\u1ebd ti\u1ebfn h\u00e0nh x\u00e2m nh\u1eadp \u1ee9ng d\u1ee5ng ch\u1ee9a d\u1eef li\u1ec7u c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. C\u00e1c l\u1ec7nh SQL \u0111\u1ed9c h\u1ea1i \u1edf \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ec1 xu\u1ea5t k\u1ebft n\u1ed1i t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u cho hacker ho\u1eb7c c\u1ea5p ph\u00e9p truy c\u1eadp cho nh\u1eefng \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p.<\/p>\n<figure id=\"attachment_9084\" aria-describedby=\"caption-attachment-9084\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9084\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/loi-sql-injection-la-gi.jpg\" alt=\"L\u1ed7i SQL Injection l\u00e0 g\u00ec?\" width=\"650\" height=\"400\" srcset=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/loi-sql-injection-la-gi.jpg 650w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/loi-sql-injection-la-gi-400x246.jpg 400w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption id=\"caption-attachment-9084\" class=\"wp-caption-text\">L\u1ed7i SQL Injection l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">SQL Injection th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n nhi\u1ec1u nh\u1ea5t trong nh\u1eefng trang web. Tuy nhi\u00ean, n\u00f3 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng t\u1ea5n c\u00f4ng b\u1ea5t k\u1ef3 c\u01a1 s\u1edf d\u1eef li\u1ec7u SQL n\u00e0o. Nh\u1eefng vector SQL \u0111\u1ed9c h\u1ea1i ho\u1ea1t \u0111\u1ed9ng cho ph\u00e9p hacker g\u00e2y ra nh\u1eefng thi\u1ec7t h\u1ea1i to l\u1edbn nh\u01b0: gi\u1ea3 m\u1ea1o danh t\u00ednh, x\u00e1o tr\u1ed9n v\u00e0 \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u, thay \u0111\u1ed5i s\u1ed1 d\u01b0, ph\u00e1 h\u1ee7y h\u1ec7 th\u1ed1ng ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 tr\u1edf th\u00e0nh admin v\u00e0 \u0103n c\u1eafp m\u1ed9t server c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<p><em><strong>M\u1eddi b\u1ea1n \u0111\u1ecdc tham kh\u1ea3o th\u00eam<\/strong>:<span style=\"color: #0000ff;\"> <a class=\"LinkSuggestion__Link-sc-1gewdgc-4 evyocv\" style=\"color: #0000ff;\" href=\"https:\/\/teky.edu.vn\/blog\/css-la-gi\/\" target=\"_blank\" rel=\"noopener\">CSS l\u00e0 g\u00ec? L\u00fd do t\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng CSS l\u00e0 g\u00ec b\u1ea1n c\u00f3 bi\u1ebft?<\/a><\/span><\/em><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Cach_thuc_tan_cong_cua_SQL_Injection_la_gi\"><\/span>C\u00e1ch th\u1ee9c t\u1ea5n c\u00f4ng c\u1ee7a SQL Injection l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 SQL Injection l\u00e0 g\u00ec k\u1ef9 h\u01a1n, ta s\u1ebd c\u00f9ng \u0111\u1ebfn v\u1edbi ph\u1ea7n ph\u00e2n lo\u1ea1i c\u00e1c t\u1ea5n c\u00f4ng SQL Injection.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"In-band_SQLi\"><\/span>In-band SQLi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng SQL ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. \u0110i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a In-band SQLi l\u00e0 k\u1ebb x\u1ea5u s\u1ebd s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t k\u00eanh \u0111\u1ec3 ti\u1ebfn h\u00e0nh t\u1ea5n c\u00f4ng v\u00e0 thu th\u1eadp d\u1eef li\u1ec7u \u0111\u00e1nh c\u1eafp \u0111\u01b0\u1ee3c. In-band SQLi hi\u1ec7n c\u00f3 2 bi\u1ebfn th\u1ec3 th\u00f4ng d\u1ee5ng bao g\u1ed3m:<\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\">Error-based SQLi: \u0110\u1ea7u ti\u00ean, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd c\u00e0i m\u1ed9t \u0111o\u1ea1n m\u00e3 \u0111\u1ed9c \u0111\u1ec3 h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o l\u1ed7i. Sau \u0111\u00f3 hacker s\u1ebd d\u00f9ng d\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c t\u1eeb nh\u1eefng th\u00f4ng b\u00e1o n\u00e0y \u0111\u1ec3 truy xu\u1ea5t ra th\u00f4ng tin c\u1ee7a c\u1ea5u tr\u00fac c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Union-based SQLi: B\u1eb1ng c\u00e1ch l\u1ee3i d\u1ee5ng to\u00e1n t\u1eed UNION SQL, hacker s\u1ebd ti\u1ebfn h\u00e0nh h\u1ee3p nh\u1ea5t c\u00e1c c\u00e2u l\u1ec7nh \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 thu \u0111\u01b0\u1ee3c m\u1ed9t HTTP response. Trong response s\u1ebd ch\u1ee9a th\u00f4ng tin ri\u00eang t\u01b0 m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng nh\u1eafm \u0111\u1ebfn.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/lotrinhlaptrinh.teky.vn\/?utm_id=ContentBlog&amp;utm_medium=Click_Blog&amp;utm_source=ContentBlog\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-22417\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2023\/10\/dang-ky-lap-trinh-teky1.gif\" alt=\"dang-ky-lap-trinh-teky1\" width=\"600\" height=\"314\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Inferential_Blind_SQLi_%E2%80%93_SQL_Injection_la_gi\"><\/span>Inferential (Blind) SQLi &#8211; SQL Injection l\u00e0 g\u00ec<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Inferential SQLi c\u00f3 \u0111\u1eb7c t\u00ednh blind v\u00ec hacker s\u1ebd kh\u00f4ng th\u1ec3 th\u1ea5y tr\u1ef1c ti\u1ebfp c\u00e1ch m\u00e0 cu\u1ed9c t\u1ea5n c\u00f4ng ho\u1ea1t \u0111\u1ed9ng. K\u1ebb t\u1ea5n c\u00f4ng kh\u00f4ng tr\u1ef1c ti\u1ebfp g\u00e2y t\u1ed5n h\u1ea1i \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u00e0 s\u1ebd g\u1eedi c\u00e1c data payload \u0111\u1ebfn server. Nh\u1eefng data payload n\u00e0y s\u1ebd g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n v\u00e0 b\u1ea1n bu\u1ed9c ph\u1ea3i \u0111\u01b0a ra nh\u1eefng ph\u1ea3n \u1ee9ng c\u00f4ng khai. \u0110\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec1u hacker c\u1ea7n, h\u1ecd n\u1eafm b\u1eaft nh\u1eefng ph\u1ea3n \u1ee9ng n\u00e0y v\u00e0 \u0111\u01b0a ra nh\u1eefng ph\u00e1n \u0111o\u00e1n v\u1ec1 c\u1ea5u tr\u00fac c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n<p style=\"text-align: justify;\">Inferential SQLi th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c thi ch\u1eadm h\u01a1n v\u00ec n\u00f3 c\u1ea7n \u0111\u1ee3i nh\u1eefng ph\u1ea3n \u1ee9ng c\u1ee7a server. Tuy nhi\u00ean, thi\u1ec7t h\u1ea1i n\u00f3 g\u00e2y ra l\u1ea1i kh\u00f4ng v\u00ec th\u1ebf m\u00e0 b\u1ecb h\u1ea1n ch\u1ebf b\u1edbt \u0111i. C\u00f3 2 bi\u1ebfn th\u1ec3 c\u1ee7a Inferential SQLi th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\">Boolean: \u0110\u1ea7u ti\u00ean, k\u1ebb x\u1ea5u s\u1ebd g\u1eedi m\u1ed9t c\u00e2u truy v\u1ea5n SQL \u0111\u1ebfn cho server. Khi \u0111\u00f3, c\u01a1 s\u1edf d\u1eef li\u1ec7u bu\u1ed9c ph\u1ea3i g\u1eedi tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 \u0111\u1ec3 tr\u1ea3 l\u1eddi cho c\u00e2u l\u1ec7nh n\u00e0y. \u0110\u00e1p \u00e1n c\u00f3 th\u1ec3 l\u00e0 \u0111\u00fang ho\u1eb7c sai. D\u1ef1a theo \u0111\u00e1p \u00e1n m\u00e0 th\u00f4ng tin c\u1ee7a HTTP response s\u1ebd \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda \u0111\u1ebfn khi \u0111\u00fang v\u1edbi th\u1ef1c t\u1ebf. V\u1eady l\u00e0 hacker \u0111\u00e3 n\u1eafm \u0111\u01b0\u1ee3c nh\u1eefng th\u00f4ng tin xung quanh c\u1ea5u tr\u00fac server.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Time-based: C\u00e1ch th\u1ee9c t\u1ea5n c\u00f4ng n\u00e0y c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 Boolean. Tuy nhi\u00ean, thay v\u00ec \u0111\u1ee3i c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0a ra \u0111\u00e1p \u00e1n, hacker s\u1ebd d\u00f9ng nh\u1eefng c\u00e2u l\u1ec7nh SQL l\u00e0m server ng\u1eebng ho\u1ea1t \u0111\u1ed9ng trong v\u00e0i gi\u00e2y. Sau \u0111\u00f3 t\u1eeb m\u1ed1c th\u1eddi gian ph\u1ea3n h\u1ed3i tra ra \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c truy v\u1ea5n. Nh\u01b0 v\u1eady, m\u1ed9t HTTP response \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra.<\/li>\n<\/ul>\n<figure id=\"attachment_9083\" aria-describedby=\"caption-attachment-9083\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9083\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-hoat-dong-cua-sql-injection-la-gi.jpg\" alt=\"C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SQL Injection l\u00e0 g\u00ec?\" width=\"650\" height=\"400\" srcset=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-hoat-dong-cua-sql-injection-la-gi.jpg 650w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-hoat-dong-cua-sql-injection-la-gi-400x246.jpg 400w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption id=\"caption-attachment-9083\" class=\"wp-caption-text\">C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a SQL Injection l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Out-of-band_SQLi\"><\/span>Out-of-band SQLi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">N\u1ebfu kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n 2 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean do server ho\u1ea1t \u0111\u1ed9ng qu\u00e1 ch\u1eadm, kh\u00f4ng \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 t\u1ea5n c\u00f4ng ho\u1eb7c hacker kh\u00f4ng c\u00f3 m\u1ed9t k\u00eanh \u0111\u1ec3 \u0111\u1ed3ng th\u1eddi t\u1ea5n c\u00f4ng v\u00e0 thu th\u1eadp k\u1ebft qu\u1ea3 th\u00ec s\u1ebd k\u1ebb x\u1ea5u s\u1ebd suy ngh\u0129 \u0111\u1ebfn ph\u01b0\u01a1ng \u00e1n th\u1ee9 ba l\u00e0 Out-of-band SQLi.<\/p>\n<p style=\"text-align: justify;\">Tuy nhi\u00ean c\u00e1ch n\u00e0y c\u1ea7n c\u00f3 \u0111i\u1ec1u ki\u1ec7n: m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng c\u1ee7a server ph\u1ea3i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t. Hacker s\u1ebd n\u1eafm l\u1ea5y c\u01a1 h\u1ed9i server t\u1ea1o ra DNS hay HTTP request \u0111\u1ec3 thu l\u1ea1i \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u cho m\u00ecnh.<\/p>\n<p><em><strong>M\u1eddi b\u1ea1n \u0111\u1ecdc tham kh\u1ea3o th\u00eam<\/strong>:<span style=\"color: #0000ff;\"> <a class=\"LinkSuggestion__Link-sc-1gewdgc-4 evyocv\" href=\"https:\/\/teky.edu.vn\/blog\/tang-toc-may-tinh-win-10\/\" target=\"_blank\" rel=\"noopener\">Th\u1ee7 thu\u1eadt t\u0103ng t\u1ed1c m\u00e1y t\u00ednh Win 10 kh\u00f4ng ph\u1ea3i ai c\u0169ng bi\u1ebft<\/a><\/span><\/em><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Cach_phong_chong_SQL_Injection_la_gi\"><\/span>C\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">C\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u1ea5n c\u00f4ng ch\u00ednh t\u1eeb SQL Injection th\u01b0\u1eddng x\u1ea3y ra \u1edf k\u00eanh input c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. V\u00ec th\u1ebf \u0111\u1ec3 ph\u00f2ng ch\u1ed1ng SQL Injection hi\u1ec7u qu\u1ea3 th\u00ec ta n\u00ean b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c b\u1ea3o v\u1ec7 k\u00eanh input.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Khong_tin_tuong_kenh_Input_cua_nguoi_dung\"><\/span>Kh\u00f4ng tin t\u01b0\u1edfng k\u00eanh Input c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Trong th\u1ef1c t\u1ebf, m\u1ecdi th\u00f4ng tin tr\u00ean k\u00eanh Input m\u00e0 ng\u01b0\u1eddi d\u00f9ng nh\u1eadp \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u \u201cdon\u2019t trust and verify\u201d. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t th\u00f4ng tin ngo\u1ea1i \u0111\u1ecba \u0111\u1ec1u s\u1ebd \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u1ed9c h\u1ea1i, tr\u1eeb khi c\u00f3 b\u1eb1ng ch\u1ee9ng ng\u01b0\u1ee3c l\u1ea1i. L\u00e0 m\u1ed9t ng\u01b0\u1eddi qu\u1ea3n l\u00fd server, b\u1ea1n ph\u1ea3i t\u1ec9nh t\u00e1o v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c tin nh\u1eefng d\u1eef li\u1ec7u n\u00e0y. M\u1ecdi th\u1ee9 x\u00e2m nh\u1eadp t\u1eeb b\u00ean ngo\u00e0i \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd s\u00e1t sao, bao g\u1ed3m c\u1ea3 v\u0103n b\u1ea3n, input \u1ea9n, c\u00e1c chu\u1ed7i tham s\u1ed1 truy v\u1ea5n, cookie v\u00e0 t\u1ec7p t\u1ea3i l\u00ean.<\/p>\n<p style=\"text-align: justify;\">N\u1ebfu b\u1ea1n ngh\u0129 r\u1eb1ng, Browsers tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n kh\u00f4ng cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng thao t\u00e1c v\u1edbi m\u1ed9t input n\u00ean s\u1ebd kh\u00f4ng th\u1ec3 x\u1ea3y ra ho\u1ea1t \u0111\u1ed9ng x\u00e2m nh\u1eadp, b\u1ea1n \u0111\u00e3 nh\u1ea7m! C\u00f3 v\u00f4 s\u1ed1 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 tr\u1ee3 gi\u00fap ng\u01b0\u1eddi d\u00f9ng gi\u1ea3 m\u1ea1o danh t\u00ednh tr\u00ean server c\u1ee7a b\u1ea1n, v\u00ed d\u1ee5 c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn Burp Suite. V\u1eady n\u1ebfu d\u00f9ng Base 64 \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u th\u00ec sao, c\u00e1ch n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o th\u00eam kh\u00f3 kh\u0103n cho hacker, nh\u01b0ng n\u00f3 v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. Khi kh\u00f4ng c\u00f2n b\u1ea5t k\u1ef3 l\u1edbp ph\u00f2ng ng\u1ef1 n\u00e0o, k\u1ebb x\u1ea5u s\u1ebd chi\u1ebfm \u0111\u01b0\u1ee3c HTTP requests v\u00e0 ti\u1ebfn h\u00e0nh x\u00e1o tr\u1ed9n th\u00f4ng tin tr\u01b0\u1edbc khi ch\u00fang \u0111\u01b0\u1ee3c g\u1eedi v\u1ec1 m\u00e1y ch\u1ee7.<\/p>\n<figure id=\"attachment_9080\" aria-describedby=\"caption-attachment-9080\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9080\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/hay-canh-giac-voi-moi-input-nguoi-dung.jpg\" alt=\"H\u00e3y c\u1ea3nh gi\u00e1c v\u1edbi m\u1ecdi Input ng\u01b0\u1eddi d\u00f9ng\" width=\"650\" height=\"400\" srcset=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/hay-canh-giac-voi-moi-input-nguoi-dung.jpg 650w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/hay-canh-giac-voi-moi-input-nguoi-dung-400x246.jpg 400w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption id=\"caption-attachment-9080\" class=\"wp-caption-text\">H\u00e3y c\u1ea3nh gi\u00e1c v\u1edbi m\u1ecdi Input ng\u01b0\u1eddi d\u00f9ng<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Xac_nhan_chuoi_cac_input_o_phia_may_chu_%E2%80%93_SQL_Injection_la_gi\"><\/span>X\u00e1c nh\u1eadn chu\u1ed7i c\u00e1c input \u1edf ph\u00eda m\u00e1y ch\u1ee7 &#8211; SQL Injection l\u00e0 g\u00ec<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">N\u1ebfu kh\u00f4ng th\u1ec3 t\u1ea1o ra m\u1ed9t b\u1ee9c t\u01b0\u1eddng \u0111\u1ee7 d\u00e0y, v\u1eady th\u00ec b\u1ea1n h\u00e3y t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 ki\u1ec3m so\u00e1t c\u00e1c v\u1ecb kh\u00e1ch ra v\u00e0o. Vi\u1ec7c x\u00e1c minh k\u1ef9 c\u00e0ng chu\u1ed7i c\u00e1c input kh\u00f4ng bao gi\u1edd l\u00e0 \u0111i\u1ec1u th\u1eeba th\u00e3i. N\u00f3 gi\u00fap t\u00ecm ra nh\u1eefng l\u1ec7nh \u1ea9n \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c nh\u1ea5n ch\u00ecm trong d\u1eef li\u1ec7u th\u00f4ng th\u01b0\u1eddng v\u00e0 ch\u1eb7n c\u00e1c k\u1ebft n\u1ed1i x\u1ea5u n\u00e0y ngay l\u1eadp t\u1ee9c. V\u00ed d\u1ee5, tr\u00ean PHP, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh: mysql \\ _real \\ _escape \\ _string () \u0111\u1ec3 lo\u1ea1i ra c\u00e1c k\u00fd t\u1ef1 c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i b\u1ea3n ch\u1ea5t c\u1ee7a SQL. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng \u00e1n r\u1ea5t an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 n\u1ebfu b\u1ea1n c\u00f3 th\u1eafc m\u1eafc c\u00e1ch ch\u1ed1ng SQL Injection l\u00e0 g\u00ec.<\/p>\n<p style=\"text-align: justify;\">Nhi\u1ec1u ng\u01b0\u1eddi th\u1eafc m\u1eafc r\u1eb1ng, li\u1ec7u trang web c\u1ee7a h\u1ecd c\u00f3 b\u1ecb t\u1ea5n c\u00f4ng kh\u00f4ng khi \u0111\u00e3 c\u00f3 nh\u1eefng b\u01b0\u1edbc x\u00e1c th\u1ef1c ph\u00eda kh\u00e1ch r\u1ed3i. \u0110i\u1ec1u n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft nh\u01b0ng v\u1eabn kh\u00f4ng \u0111\u1ee7. Th\u1ef1c t\u1ebf cho th\u1ea5y r\u1eb1ng m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 nh\u01b0 browser tweak v\u1eabn c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua b\u01b0\u1edbc x\u00e1c minh n\u00e0y m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. V\u00e0 \u0111\u00f3 l\u00e0 c\u00e1ch m\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng SQL Injection b\u1eaft \u0111\u1ea7u. V\u1eady n\u00ean \u0111\u1ec3 ch\u1eafc ch\u1eafn, h\u00e3y x\u00e1c nh\u1eadn chu\u1ed7i c\u00e1c input \u1edf c\u1ea3 ph\u00eda m\u00e1y ch\u1ee7 n\u1eefa.<\/p>\n<p><a href=\"https:\/\/lotrinhlaptrinh.teky.vn\/?utm_id=ContentBlog&amp;utm_medium=Click_Blog&amp;utm_source=ContentBlog\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-22422\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2023\/10\/lap-trinh-cho-tre.gif\" alt=\"lap-trinh-cho-tre\" width=\"600\" height=\"314\" \/><\/a><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Su_dung_cac_cau_lenh_tham_so\"><\/span>S\u1eed d\u1ee5ng c\u00e1c c\u00e2u l\u1ec7nh tham s\u1ed1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">M\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 kh\u00e1c n\u1eefa \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c SQL Injection l\u00e0 s\u1eed d\u1ee5ng c\u00e2u l\u1ec7nh tham s\u1ed1. Vi\u1ec7c tham s\u1ed1 h\u00f3a c\u00e1c c\u00e2u l\u1ec7nh gi\u00fap c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa m\u00e3 v\u00e0 d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o. Ch\u00ednh v\u00ec th\u1ebf, n\u00f3 s\u1ebd d\u1ec5 d\u00e0ng ch\u1eb7n l\u1ea1i c\u00e1c d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c cung c\u1ea5p tham s\u1ed1 khi ch\u00fang mu\u1ed1n x\u00e2m nh\u1eadp.<\/p>\n<figure id=\"attachment_9081\" aria-describedby=\"caption-attachment-9081\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9081\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-phong-chong-sql-injection-la-gi.jpg\" alt=\"C\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection l\u00e0 g\u00ec?\" width=\"650\" height=\"400\" srcset=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-phong-chong-sql-injection-la-gi.jpg 650w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/09\/cach-phong-chong-sql-injection-la-gi-400x246.jpg 400w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><figcaption id=\"caption-attachment-9081\" class=\"wp-caption-text\">C\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<blockquote><p>Tham kh\u1ea3o th\u00eam: <a href=\"https:\/\/teky.edu.vn\/blog\/heroku-la-gi\/\">Heroku l\u00e0 g\u00ec? Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng v\u00e0 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m<\/a><\/p><\/blockquote>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Ket_luan_SQL_Injection_la_gi\"><\/span>K\u1ebft lu\u1eadn SQL Injection l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">SQL Injection \u0111\u00e3 v\u00e0 \u0111ang l\u00e0 m\u1ed9t hi\u1ec3m h\u1ecda ti\u1ec1m t\u00e0ng \u0111\u1ed1i v\u1edbi m\u1ecdi doanh nghi\u1ec7p. Nh\u1eefng t\u1ed5n th\u1ea5t n\u00f3 g\u00e2y ra l\u00e0 kh\u00f4ng h\u1ea1n ch\u1ebf, v\u00ec th\u1ebf ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i th\u1eadt c\u1ea9n th\u1eadn v\u1edbi l\u1ed7i t\u1ea5n c\u00f4ng n\u00e0y. Tuy nhi\u00ean, b\u1ea1n kh\u00f4ng c\u1ea7n qu\u00e1 lo l\u1eafng. Ch\u1ec9 c\u1ea7n n\u1eafm r\u00f5 nh\u1eefng th\u00f4ng tin v\u1ec1 SQL Injection l\u00e0 g\u00ec c\u0169ng nh\u01b0 ch\u1ed1ng l\u1ea1i n\u00f3 l\u00e0 \u0111\u00e3 c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ef7 l\u1ec7 b\u1ecb t\u1ea5n c\u00f4ng r\u1ea5t nhi\u1ec1u r\u1ed3i. Mong r\u1eb1ng nh\u1eefng th\u00f4ng tin v\u1eeba \u0111\u01b0\u1ee3c Teky mang \u0111\u1ebfn s\u1ebd gi\u00fap b\u1ea1n h\u00ecnh dung r\u00f5 v\u1ec1 lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y v\u00e0 c\u00f3 nh\u1eefng ph\u01b0\u01a1ng \u00e1n ph\u00f2ng b\u1ecb th\u00edch h\u1ee3p.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hoc_vien_cong_nghe_Teky_la_noi_hoc_lap_trinh_hang_dau_Viet_Nam\"><\/span><span style=\"font-size: 24px; color: #339966;\" data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;C\u00f9ng T\u00ecm Hi\u1ec3u V\u1ec1 Teky H\u1ecdc Vi\u1ec7n 5 sao \u0110\u00e0o T\u1ea1o Tr\u1ebb Em H\u1ecdc L\u1eadp Tr\u00ecnh (4-18 tu\u1ed5i)&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:17153,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0,&quot;17&quot;:1}\">H\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 Teky l\u00e0 n\u01a1i h\u1ecdc l\u1eadp tr\u00ecnh h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><iframe loading=\"lazy\" title=\"H\u1ecdc l\u1eadp tr\u00ecnh tr\u1ebb em \u1edf \u0111\u00e2u? - Gi\u1edbi thi\u1ec7u h\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 TEKY h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/kGgr0XJAxFM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>TEKY l\u00e0 H\u1ecdc vi\u1ec7n s\u00e1ng t\u1ea1o c\u00f4ng ngh\u1ec7<\/strong> v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3ng d\u1ea1y STEAM (Science \u2013 Technology \u2013 Engineering \u2013 Art \u2013 Mathematics) theo chu\u1ea9n M\u1ef9 \u0111\u1ea7u ti\u00ean t\u1ea1i Vi\u1ec7t Nam d\u00e0nh cho tr\u1ebb em t\u1eeb 4 \u0111\u1ebfn 18 tu\u1ed5i.<\/p>\n<p>\u0110\u01b0\u1ee3c th\u00e0nh l\u1eadp v\u00e0o th\u00e1ng 6 n\u0103m 2016, TEKY quy\u1ebft t\u00e2m th\u1ef1c hi\u1ec7n s\u1ee9 m\u1ec7nh mang \u0111\u1ebfn cho th\u1ebf h\u1ec7 tr\u1ebb Vi\u1ec7t Nam ki\u1ebfn th\u1ee9c to\u00e0n di\u1ec7n v\u1ec1 STEAM, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c t\u01b0 duy c\u00f4ng ngh\u1ec7, khoa h\u1ecdc m\u00e1y t\u00ednh v\u00e0 k\u1ef9 n\u0103ng th\u1ebf k\u1ef7 21 \u2013 4Cs (Critical Thinking: T\u01b0 duy ph\u1ea3n bi\u1ec7n \u2013 Communication: Giao ti\u1ebfp \u2013 Creativity: S\u00e1ng t\u1ea1o \u2013 Collaboration: L\u00e0m vi\u1ec7c nh\u00f3m).<\/p>\n<figure id=\"attachment_14828\" aria-describedby=\"caption-attachment-14828\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/teky.edu.vn\/?utm_source=Blog&amp;utm_medium=baiviet\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-14828 size-full\" src=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/03\/Trai-nghiem-hoc-lap-trinh-mien-phi.jpg\" alt=\"Tr\u1ea3i nghi\u1ec7m h\u1ecdc l\u1eadp tr\u00ecnh mi\u1ec5n ph\u00ed\" width=\"600\" height=\"400\" srcset=\"https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/03\/Trai-nghiem-hoc-lap-trinh-mien-phi.jpg 600w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/03\/Trai-nghiem-hoc-lap-trinh-mien-phi-400x267.jpg 400w, https:\/\/teky.edu.vn\/blog\/wp-content\/uploads\/2021\/03\/Trai-nghiem-hoc-lap-trinh-mien-phi-272x182.jpg 272w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-14828\" class=\"wp-caption-text\">Tr\u1ea3i nghi\u1ec7m h\u1ecdc l\u1eadp tr\u00ecnh mi\u1ec5n ph\u00ed<\/figcaption><\/figure>\n<h4><span class=\"ez-toc-section\" id=\"Day_la_chuong_trinh_khong_chi_trang_bi_kien_thuc_lap_trinh_ma_con_ren_luyen_nhom_ky_nang_4Cs_Tre_se_duoc\"><\/span>\u0110\u00e2y l\u00e0 ch\u01b0\u01a1ng tr\u00ecnh kh\u00f4ng ch\u1ec9 trang b\u1ecb ki\u1ebfn th\u1ee9c l\u1eadp tr\u00ecnh m\u00e0 c\u00f2n r\u00e8n luy\u1ec7n nh\u00f3m k\u1ef9 n\u0103ng 4Cs. Tr\u1ebb s\u1ebd \u0111\u01b0\u1ee3c:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\u00a0H\u1ecdc t\u01b0 duy ph\u1ea3n bi\u1ec7n th\u00f4ng qua vi\u1ec7c ph\u00e2n t\u00edch c\u00e1c v\u1ea5n \u0111\u1ec1.<\/li>\n<li>\u00a0H\u1ecdc t\u00ednh s\u00e1ng t\u1ea1o t\u01b0 duy Logic th\u00f4ng qua vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 l\u1eadp tr\u00ecnh robot th \u00f4ng qua c\u00e1c m\u00f4 h\u00ecnh Lego Mindstorm, app tr\u00f2 ch\u01a1i. Gi\u00fap con h\u1ecdc gi\u1ecfi m\u00f4n To\u00e1n tr\u00ean l\u1edbp<\/li>\n<li>\u00a0K\u1ef9 n\u0103ng h\u1ee3p t\u00e1c th\u00f4ng qua c\u00e1c tr\u00f2 ch\u01a1i team-building, c\u00e1c d\u1ef1 \u00e1n nh\u00f3m tr\u00ean l\u1edbp.<\/li>\n<li>\u00a0Ph\u00e1t huy kh\u1ea3 n\u0103ng giao ti\u1ebfp hi\u1ec7u qu\u1ea3 b\u1eb1ng nhi\u1ec1u b\u00e0i t\u1eadp v\u00e0 ho\u1ea1t \u0111\u1ed9ng h\u1ea5p d\u1eabn.<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" title=\"Shark Nguy\u1ec5n Ho\u00e0 B\u00ecnh \u0111\u1ed3ng h\u00e0nh c\u00f9ng con h\u1ecdc l\u1eadp tr\u00ecnh t\u1ea1i h\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 Teky h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/q6QbqIs6ll8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>C\u00e1c b\u1ed9 m\u00f4n gi\u1ea3ng d\u1ea1y t\u1ea1i Teky g\u1ed3m: <span style=\"font-weight: 400;\">L\u1eadp tr\u00ecnh v\u00e0 ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">l\u1eadp tr\u00ecnh game<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">l\u1eadp tr\u00ecnh web v\u1edbi python<\/span> <span style=\"font-weight: 400;\">\u00a0<\/span><span style=\"font-weight: 400;\">L\u1eadp tr\u00ecnh Scratch<\/span> <span style=\"font-weight: 400;\">Robotics<\/span> Engineering, C\u00f4ng ngh\u1ec7 3D v\u00e0 MultiMedia. Ch\u00fang t\u00f4i tin r\u1eb1ng tr\u1ebb em Vi\u1ec7t Nam c\u00f3 c\u01a1 h\u1ed9i ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd trong m\u1ed9t n\u1ec1n kinh t\u1ebf s\u1ed1 v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c trang b\u1ecb s\u1eb5n s\u00e0ng \u0111\u1ec3 tr\u1edf th\u00e0nh nh\u1eefng doanh nh\u00e2n c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lien_he_ngay_hoc_vien_cong_nghe_sang_tao_TEKY_de_duoc_tu_van_khoa_hoc\"><\/span><span style=\"color: #008000;\"><b>Li\u00ean h\u1ec7 ngay h\u1ecdc vi\u1ec7n c\u00f4ng ngh\u1ec7 s\u00e1ng t\u1ea1o TEKY \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n kh\u00f3a h\u1ecdc:<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cam k\u00eat 7 tu\u1ed5i c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Top 10 d\u1ef1 \u00e1n gi\u00e1o d\u1ee5c c\u00f3 t\u1ea7m \u1ea3nh h\u01b0\u1edfng nh\u1ea5t \u0110\u00f4ng Nam \u00c1 2017 &amp; 2018<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Top 3 D\u1ef1 \u00e1n xu\u1ea5t s\u1eafc nh\u1ea5t, NextGen \u2013 Th\u1ee5y S\u0129<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Hotline H\u00e0 N\u1ed9i: 024-7109-6668 | 0975-241-015<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Hotline H\u1ed3 Ch\u00ed Minh: 028-7109 9948 | 097-900-8642<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Website <\/span><a href=\"https:\/\/teky.edu.vn\/\"><span style=\"font-weight: 400;\">https:\/\/teky.edu.vn<\/span><\/a><span style=\"font-weight: 400;\"> | Email: support@teky.edu.vn |<\/span><\/p>\n<p style=\"text-align: justify;\">\n","protected":false},"excerpt":{"rendered":"<p>SQL Injection \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 m\u1ed9t c\u00e1ch t\u1ea5n c\u00f4ng kho d\u1eef li\u1ec7u SQL v\u00f4 c\u00f9ng nguy hi\u1ec3m. Nh\u1eefng h\u1eadu qu\u1ea3 n\u00f3 \u0111\u1ec3 l\u1ea1i l\u00e0 v\u00f4 c\u00f9ng to l\u1edbn. Trong th\u1eddi gian g\u1ea7n \u0111\u00e2y, r\u1ea5t nhi\u1ec1u c\u00f4ng ty v\u00e0 doanh nghi\u1ec7p ph\u1ea3i ch\u1ecbu nh\u1eefng t\u1ed5n th\u1ea5t \u0111\u00e1ng k\u1ec3 b\u1edfi SQL Injection. \u0110\u1ec3 ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c &hellip;<\/p>\n","protected":false},"author":10,"featured_media":9082,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-9079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lap-trinh"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.9 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SQL Injection l\u00e0 g\u00ec? 3 c\u00e1ch ph\u00f2ng ch\u1ed1ng SQL Injection hi\u1ec7u qu\u1ea3<\/title>\n<meta name=\"description\" content=\"SQL Injection l\u00e0 g\u00ec? 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