{"id":9517,"date":"2026-05-14T17:29:19","date_gmt":"2026-05-14T14:29:19","guid":{"rendered":"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/"},"modified":"2026-05-14T17:29:19","modified_gmt":"2026-05-14T14:29:19","slug":"sql-injection-nedir","status":"publish","type":"post","link":"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/","title":{"rendered":"SQL Injection Nedir? Nas\u0131l \u00d6nlenir? (2026 K\u0131lavuzu)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 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\">\u0130\u00e7indekiler \u2714<\/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=\"\u0130\u00e7indekiler Tablosunu A\u00e7\/Kapat\"><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:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/#SQL_Injection_Nasil_Calisir_Gercek_Dunya_Ornegi\" >SQL Injection Nas\u0131l \u00c7al\u0131\u015f\u0131r? Ger\u00e7ek D\u00fcnya \u00d6rne\u011fi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/#SQL_Injectiondan_Korunma_Yollari_Guvenlik_Duvari_Nasil_Orulur\" >SQL Injection&#8217;dan Korunma Yollar\u0131: G\u00fcvenlik Duvar\u0131 Nas\u0131l \u00d6r\u00fcl\u00fcr?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/#Veritabani_Guvenligi_Izinleri_Dogru_Yapilandirmanin_Onemi\" >Veritaban\u0131 G\u00fcvenli\u011fi: \u0130zinleri Do\u011fru Yap\u0131land\u0131rman\u0131n \u00d6nemi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/#SQL_Injectiona_Karsi_Surekli_Tetikte_Olmak_Duzenli_Taramalar_ve_Guncellemeler\" >SQL Injection&#8217;a Kar\u015f\u0131 S\u00fcrekli Tetikte Olmak: D\u00fczenli Taramalar ve G\u00fcncellemeler<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hostixo.com\/blog\/sql-injection-nedir\/#SQL_Injectiondan_Korunmak_Uzman_Tavsiyesi\" >SQL Injection&#8217;dan Korunmak: Uzman Tavsiyesi<\/a><\/li><\/ul><\/nav><\/div>\n<p>Web uygulamalar\u0131n\u0131n en b\u00fcy\u00fck kabuslar\u0131ndan biri olan SQL injection, siber sald\u0131rganlar\u0131n veritaban\u0131n\u0131za s\u0131zarak hassas bilgilerinizi ele ge\u00e7irmesine olanak tan\u0131r. Peki, tam olarak SQL injection nedir ve web <a href=\"https:\/\/www.hostixo.com\/hosting\/hazir-site\/\" data-internallinksmanager029f6b8e52c=\"11\" title=\"haz\u0131r site\">site<\/a>nizi bu tehlikeden nas\u0131l koruyabilirsiniz? Bu yaz\u0131da, SQL injection sald\u0131r\u0131s\u0131n\u0131n ne oldu\u011funu, nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve en \u00f6nemlisi, bu t\u00fcr sald\u0131r\u0131lardan korunmak i\u00e7in alman\u0131z gereken \u00f6nlemleri detayl\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n<div class=\"wa-quick-answer\"><strong>H\u0131zl\u0131 Yan\u0131t:<\/strong> SQL injection, sald\u0131rganlar\u0131n k\u00f6t\u00fc niyetli SQL kodlar\u0131n\u0131 kullanarak bir uygulaman\u0131n veritaban\u0131na eri\u015fmesini sa\u011flayan bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131d\u0131r. Bu, veri kayb\u0131na, sistem ele ge\u00e7irilmesine ve itibar kayb\u0131na yol a\u00e7abilir.<\/div>\n<ul class=\"wa-key-points\">\n<li>SQL injection, web uygulamalar\u0131 i\u00e7in ciddi bir tehdittir.<\/li>\n<li>Sald\u0131rganlar, formlar arac\u0131l\u0131\u011f\u0131yla k\u00f6t\u00fc niyetli kod enjekte eder.<\/li>\n<li>Haz\u0131rl\u0131kl\u0131 ifadeler ve parametreli sorgular en etkili savunma y\u00f6ntemleridir.<\/li>\n<li>Veritaban\u0131 izinlerini do\u011fru yap\u0131land\u0131rmak \u00f6nemlidir.<\/li>\n<li>D\u00fczenli g\u00fcvenlik taramalar\u0131 ve g\u00fcncellemeler kritik \u00f6neme sahiptir.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"SQL_Injection_Nasil_Calisir_Gercek_Dunya_Ornegi\"><\/span>SQL Injection Nas\u0131l \u00c7al\u0131\u015f\u0131r? Ger\u00e7ek D\u00fcnya \u00d6rne\u011fi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SQL injection, genellikle kullan\u0131c\u0131 giri\u015f alanlar\u0131 (formlar, arama kutular\u0131 vb.) arac\u0131l\u0131\u011f\u0131yla ger\u00e7ekle\u015ftirilir. Sald\u0131rgan, bu alanlara normal veri yerine k\u00f6t\u00fc niyetli SQL komutlar\u0131 yerle\u015ftirir. Bu komutlar, uygulama taraf\u0131ndan \u00e7al\u0131\u015ft\u0131r\u0131larak veritaban\u0131na yetkisiz eri\u015fim sa\u011flar.<\/p>\n<p><b>\u00d6rnek:<\/b> Bir e-ticaret sitesinde, kullan\u0131c\u0131 ad\u0131 ve \u015fifre giri\u015f alanlar\u0131 \u00fczerinden SQL injection denemesi yap\u0131labilir. Sald\u0131rgan, kullan\u0131c\u0131 ad\u0131 alan\u0131na &#8216; OR &#8216;1&#8217;=&#8217;1 gibi bir ifade yazarak, \u015fifre kontrol\u00fcn\u00fc atlay\u0131p sisteme giri\u015f yapabilir. Bu basit \u00f6rnek bile, SQL injection&#8217;\u0131n ne kadar tehlikeli olabilece\u011fini g\u00f6stermektedir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SQL_Injectiondan_Korunma_Yollari_Guvenlik_Duvari_Nasil_Orulur\"><\/span>SQL Injection&#8217;dan Korunma Yollar\u0131: G\u00fcvenlik Duvar\u0131 Nas\u0131l \u00d6r\u00fcl\u00fcr?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SQL injection&#8217;dan korunman\u0131n en etkili yolu, <b>haz\u0131rl\u0131kl\u0131 ifadeler (prepared statements)<\/b> ve <b>parametreli sorgular (parameterized queries)<\/b> kullanmakt\u0131r. Bu y\u00f6ntemler, kullan\u0131c\u0131 giri\u015flerini do\u011frudan SQL sorgusuna eklemek yerine, verileri parametre olarak g\u00f6nderir ve veritaban\u0131 taraf\u0131ndan g\u00fcvenli bir \u015fekilde i\u015flenmesini sa\u011flar.<\/p>\n<p><b>Ad\u0131m Ad\u0131m Uygulama:<\/b><\/p>\n<ol>\n<li>Veritaban\u0131 k\u00fct\u00fcphanenizin haz\u0131rl\u0131kl\u0131 ifade deste\u011fini etkinle\u015ftirin.<\/li>\n<li>Kullan\u0131c\u0131 giri\u015flerini do\u011frudan SQL sorgusuna eklemekten ka\u00e7\u0131n\u0131n.<\/li>\n<li>Parametreleri do\u011fru veri t\u00fcrleriyle e\u015fle\u015ftirin.<\/li>\n<li>Veritaban\u0131 kullan\u0131c\u0131lar\u0131n\u0131n yetkilerini s\u0131n\u0131rland\u0131r\u0131n.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Veritabani_Guvenligi_Izinleri_Dogru_Yapilandirmanin_Onemi\"><\/span>Veritaban\u0131 G\u00fcvenli\u011fi: \u0130zinleri Do\u011fru Yap\u0131land\u0131rman\u0131n \u00d6nemi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SQL injection sald\u0131r\u0131lar\u0131n\u0131n etkisini azaltman\u0131n bir di\u011fer yolu, veritaban\u0131 kullan\u0131c\u0131lar\u0131n\u0131n izinlerini do\u011fru bir \u015fekilde yap\u0131land\u0131rmakt\u0131r. Her kullan\u0131c\u0131n\u0131n yaln\u0131zca ihtiya\u00e7 duydu\u011fu verilere eri\u015febilmesi sa\u011flanmal\u0131d\u0131r. \u00d6rne\u011fin, bir web uygulamas\u0131n\u0131n yaln\u0131zca belirli tablolar\u0131 okuma ve yazma yetkisi olmal\u0131, sistem tablolar\u0131na veya di\u011fer hassas verilere eri\u015fimi engellenmelidir.<\/p>\n<p><b>\u00d6rnek Senaryo:<\/b> Bir blog uygulamas\u0131nda, yazarlar\u0131n yaln\u0131zca kendi yaz\u0131lar\u0131n\u0131 d\u00fczenleyebilmesi i\u00e7in, her yazar i\u00e7in ayr\u0131 bir veritaban\u0131 kullan\u0131c\u0131s\u0131 olu\u015fturulabilir ve bu kullan\u0131c\u0131lara yaln\u0131zca kendi yaz\u0131lar\u0131na eri\u015fim izni verilebilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SQL_Injectiona_Karsi_Surekli_Tetikte_Olmak_Duzenli_Taramalar_ve_Guncellemeler\"><\/span>SQL Injection&#8217;a Kar\u015f\u0131 S\u00fcrekli Tetikte Olmak: D\u00fczenli Taramalar ve G\u00fcncellemeler<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SQL injection&#8217;dan korunmak i\u00e7in d\u00fczenli g\u00fcvenlik taramalar\u0131 yapmak ve yaz\u0131l\u0131mlar\u0131n\u0131z\u0131 g\u00fcncel tutmak da kritik \u00f6neme sahiptir. G\u00fcvenlik taramalar\u0131, potansiyel g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 tespit etmenize yard\u0131mc\u0131 olurken, g\u00fcncellemeler bu a\u00e7\u0131klar\u0131 kapat\u0131r ve sisteminizi daha g\u00fcvenli hale getirir.<\/p>\n<p><b>Pratik \u0130pu\u00e7lar\u0131:<\/b><\/p>\n<ul>\n<li>OWASP ZAP gibi \u00fccretsiz g\u00fcvenlik tarama ara\u00e7lar\u0131n\u0131 kullan\u0131n.<\/li>\n<li>Veritaban\u0131 ve web sunucusu yaz\u0131l\u0131mlar\u0131n\u0131z\u0131 d\u00fczenli olarak g\u00fcncelleyin.<\/li>\n<li>G\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 takip edin ve gerekli \u00f6nlemleri al\u0131n.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"SQL_Injectiondan_Korunmak_Uzman_Tavsiyesi\"><\/span>SQL Injection&#8217;dan Korunmak: Uzman Tavsiyesi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SQL injection, web uygulamalar\u0131 i\u00e7in ciddi bir tehdit olu\u015fturur, ancak do\u011fru \u00f6nlemlerle bu tehdidi minimize etmek m\u00fcmk\u00fcnd\u00fcr. Haz\u0131rl\u0131kl\u0131 ifadeler, parametreli sorgular, do\u011fru veritaban\u0131 izinleri ve d\u00fczenli g\u00fcvenlik taramalar\u0131, SQL injection&#8217;a kar\u015f\u0131 etkili bir savunma hatt\u0131 olu\u015fturman\u0131za yard\u0131mc\u0131 olacakt\u0131r. Unutmay\u0131n, g\u00fcvenlik s\u00fcrekli bir s\u00fcre\u00e7tir ve s\u00fcrekli tetikte olmak \u00f6nemlidir.<\/p>\n<div>\n<div>\n<h3>SQL injection nedir ve neden tehlikelidir?<\/h3>\n<div>\n<div>\n<p>SQL injection, sald\u0131rganlar\u0131n k\u00f6t\u00fc niyetli SQL kodlar\u0131n\u0131 kullanarak bir uygulaman\u0131n veritaban\u0131na eri\u015fmesini sa\u011flayan bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131d\u0131r. Tehlikelidir \u00e7\u00fcnk\u00fc veri kayb\u0131na, sistem ele ge\u00e7irilmesine ve itibar kayb\u0131na yol a\u00e7abilir.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3>SQL injection sald\u0131r\u0131lar\u0131 nas\u0131l \u00f6nlenir?<\/h3>\n<div>\n<div>\n<p>SQL injection sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemenin en etkili yollar\u0131, haz\u0131rl\u0131kl\u0131 ifadeler (prepared statements) ve parametreli sorgular (parameterized queries) kullanmakt\u0131r. Ayr\u0131ca, veritaban\u0131 kullan\u0131c\u0131lar\u0131n\u0131n yetkilerini s\u0131n\u0131rland\u0131rmak ve d\u00fczenli g\u00fcvenlik taramalar\u0131 yapmak da \u00f6nemlidir.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3>Haz\u0131rl\u0131kl\u0131 ifadeler (prepared statements) SQL injection&#8217;a kar\u015f\u0131 nas\u0131l koruma sa\u011flar?<\/h3>\n<div>\n<div>\n<p>Haz\u0131rl\u0131kl\u0131 ifadeler, kullan\u0131c\u0131 giri\u015flerini do\u011frudan SQL sorgusuna eklemek yerine, verileri parametre olarak g\u00f6nderir. Bu sayede, veritaban\u0131 sistemi, kullan\u0131c\u0131 giri\u015flerini veri olarak de\u011ferlendirir ve k\u00f6t\u00fc niyetli SQL komutlar\u0131n\u0131 \u00e7al\u0131\u015ft\u0131rmaz.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3>Veritaban\u0131 izinlerini do\u011fru yap\u0131land\u0131rmak neden \u00f6nemlidir?<\/h3>\n<div>\n<div>\n<p>Veritaban\u0131 izinlerini do\u011fru yap\u0131land\u0131rmak, sald\u0131rganlar\u0131n veritaban\u0131na yetkisiz eri\u015fimini engeller. Her kullan\u0131c\u0131n\u0131n yaln\u0131zca ihtiya\u00e7 duydu\u011fu verilere eri\u015febilmesi sa\u011flanarak, SQL injection sald\u0131r\u0131lar\u0131n\u0131n potansiyel etkisi azalt\u0131l\u0131r.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3>SQL injection g\u00fcvenlik a\u00e7\u0131klar\u0131 nas\u0131l tespit edilir?<\/h3>\n<div>\n<div>\n<p>SQL injection g\u00fcvenlik a\u00e7\u0131klar\u0131, otomatik g\u00fcvenlik tarama ara\u00e7lar\u0131 (\u00f6rne\u011fin, OWASP ZAP) veya manuel kod incelemesi ile tespit edilebilir. G\u00fcvenlik tarama ara\u00e7lar\u0131, potansiyel g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 otomatik olarak tespit ederken, manuel kod incelemesi daha derinlemesine bir analiz sa\u011flar.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3>SQL injection&#8217;a kar\u015f\u0131 alternatif g\u00fcvenlik \u00f6nlemleri nelerdir?<\/h3>\n<div>\n<div>\n<p>SQL injection&#8217;a kar\u015f\u0131 alternatif g\u00fcvenlik \u00f6nlemleri aras\u0131nda, web uygulama g\u00fcvenlik duvar\u0131 (WAF) kullanmak, giri\u015f do\u011frulama (input validation) yapmak ve d\u00fczenli g\u00fcvenlik g\u00fcncellemeleri yay\u0131nlamak yer al\u0131r. WAF, k\u00f6t\u00fc niyetli trafi\u011fi engellerken, giri\u015f do\u011frulama, kullan\u0131c\u0131 giri\u015flerinin g\u00fcvenli oldu\u011fundan emin olmay\u0131 sa\u011flar.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>SQL injection, web uygulamalar\u0131n\u0131n en b\u00fcy\u00fck g\u00fcvenlik a\u00e7\u0131klar\u0131ndan biridir. Bu yaz\u0131da, SQL injection sald\u0131r\u0131s\u0131n\u0131n ne oldu\u011funu, nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve web sitenizi bu tehlikeden nas\u0131l koruyabilece\u011finizi \u00f6\u011freneceksiniz. G\u00fcvenli\u011finiz i\u00e7in hemen okuyun!<\/p>\n","protected":false},"author":1,"featured_media":9518,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9517","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/posts\/9517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/comments?post=9517"}],"version-history":[{"count":0,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/posts\/9517\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/media\/9518"}],"wp:attachment":[{"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/media?parent=9517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/categories?post=9517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hostixo.com\/blog\/wp-json\/wp\/v2\/tags?post=9517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}