{"id":5362,"date":"2026-03-11T15:43:50","date_gmt":"2026-03-11T12:43:50","guid":{"rendered":"https:\/\/hostingdunyam.com.tr\/blog\/?p=5362"},"modified":"2026-03-12T12:23:59","modified_gmt":"2026-03-12T09:23:59","slug":"captcha-nedir","status":"publish","type":"post","link":"https:\/\/hostingdunyam.com.tr\/blog\/captcha-nedir","title":{"rendered":"Captcha Nedir?"},"content":{"rendered":"

Captcha, bir web sitesini ziyaret eden kullan\u0131c\u0131n\u0131n <\/span>ger\u00e7ek bir insan m\u0131 yoksa otomatik bir bot mu oldu\u011funu anlamak i\u00e7in kullan\u0131lan g\u00fcvenlik do\u011frulama sistemidir<\/b>. \u0130nternet sitelerinde \u00f6zellikle form g\u00f6nderimleri, kullan\u0131c\u0131 kay\u0131tlar\u0131 ve giri\u015f i\u015flemleri s\u0131ras\u0131nda kullan\u0131lan captcha sistemi, otomatik yaz\u0131l\u0131mlar\u0131n siteyi k\u00f6t\u00fcye kullanmas\u0131n\u0131 engellemeyi ama\u00e7lar.<\/span><\/p>\n

\u0130nternetteki bir\u00e7ok sald\u0131r\u0131 ve spam i\u015flemi, bot ad\u0131 verilen otomatik yaz\u0131l\u0131mlar taraf\u0131ndan ger\u00e7ekle\u015ftirilir. Bu botlar; sahte hesap olu\u015fturabilir, spam yorumlar g\u00f6nderebilir veya sistemleri a\u015f\u0131r\u0131 isteklerle zorlayabilir. Captcha teknolojisi ise kullan\u0131c\u0131ya \u00e7\u00f6zmesi gereken k\u00fc\u00e7\u00fck bir g\u00f6rev vererek bu botlar\u0131 ay\u0131klamay\u0131 sa\u011flar. Bu do\u011frulamalar, insanlar\u0131n kolayca \u00e7\u00f6zebilece\u011fi ancak botlar\u0131n \u00e7\u00f6zmekte zorlanaca\u011f\u0131 \u015fekilde tasarlan\u0131r. B\u00f6ylece web siteleri spam ve k\u00f6t\u00fc ama\u00e7l\u0131 otomasyonlardan korunur.<\/span><\/p>\n

G\u00fcn\u00fcm\u00fczde captcha sistemleri yaln\u0131zca g\u00fcvenlik sa\u011flamakla kalmaz; ayn\u0131 zamanda <\/span>kullan\u0131c\u0131 deneyimini m\u00fcmk\u00fcn oldu\u011funca bozmadan botlar\u0131 engelleyecek \u015fekilde geli\u015ftirilmektedir<\/b>. \u00d6zellikle modern captcha sistemleri, kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 analiz ederek \u00e7o\u011fu zaman herhangi bir i\u015flem yapt\u0131rmadan do\u011frulama sa\u011flayabilir.<\/span><\/p>\n

Captcha Ne \u0130\u015fe Yarar?<\/span><\/h2>\n

Captcha sisteminin temel amac\u0131 web sitelerini otomatik sald\u0131r\u0131lardan ve spam i\u015flemlerden korumakt\u0131r. \u0130nternet \u00fczerinde \u00e7ok say\u0131da bot bulunur ve bu botlar \u00e7e\u015fitli ama\u00e7larla web sitelerini hedef alabilir. Captcha kullan\u0131m\u0131 bu t\u00fcr k\u00f6t\u00fc ama\u00e7l\u0131 aktiviteleri b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azalt\u0131r.<\/span><\/p>\n

    \n
  1. Spam yorumlar\u0131 engeller: <\/b>Bloglar ve forumlar s\u0131k\u00e7a spam botlar\u0131n\u0131n hedefi olur. Botlar y\u00fczlerce hatta binlerce spam yorum b\u0131rakabilir. Captcha do\u011frulamas\u0131 bu yorumlar\u0131n b\u00fcy\u00fck b\u00f6l\u00fcm\u00fcn\u00fc engeller.<\/span><\/li>\n
  2. Sahte hesap olu\u015fturmay\u0131 \u00f6nler: <\/b>Bir\u00e7ok web sitesi kullan\u0131c\u0131 kay\u0131t sistemine sahiptir. Botlar toplu \u015fekilde sahte hesap olu\u015fturabilir. Captcha sayesinde kay\u0131t i\u015flemi s\u0131ras\u0131nda ger\u00e7ek kullan\u0131c\u0131 do\u011frulamas\u0131 yap\u0131l\u0131r.<\/span><\/li>\n
  3. Brute force sald\u0131r\u0131lar\u0131n\u0131 azalt\u0131r: <\/b>Siber sald\u0131rganlar bazen otomatik yaz\u0131l\u0131mlar kullanarak \u015fifre tahmin etmeye \u00e7al\u0131\u015f\u0131r. Giri\u015f sayfalar\u0131nda captcha kullan\u0131lmas\u0131 bu t\u00fcr sald\u0131r\u0131lar\u0131 zorla\u015ft\u0131r\u0131r.<\/span><\/li>\n
  4. Form spam\u0131n\u0131 engeller: <\/b>\u0130leti\u015fim formlar\u0131 veya teklif formlar\u0131 spam botlar\u0131 taraf\u0131ndan doldurulabilir. Captcha do\u011frulamas\u0131 bu t\u00fcr spam g\u00f6nderimlerini engeller.<\/span><\/li>\n
  5. Sunucu kaynaklar\u0131n\u0131 korur: <\/b>Botlar\u0131n g\u00f6nderdi\u011fi yo\u011fun istekler sunucu kaynaklar\u0131n\u0131 t\u00fcketebilir. Captcha, otomatik trafi\u011fi azaltarak sunucu performans\u0131n\u0131 korur.<\/span><\/li>\n<\/ol>\n

    Hangi Siteler Captcha Kullanmal\u0131?<\/span><\/h2>\n

    Captcha sistemi her web sitesi i\u00e7in zorunlu de\u011fildir, ancak baz\u0131 siteler i\u00e7in olduk\u00e7a \u00f6nemlidir. \u00d6zellikle kullan\u0131c\u0131 etkile\u015fimi y\u00fcksek olan ve form kullan\u0131m\u0131 bulunan sitelerde captcha kullan\u0131m\u0131 \u00f6nerilir.<\/span><\/p>\n

    Captcha \u00c7e\u015fitleri Nelerdir?<\/span><\/h2>\n

    Captcha teknolojisi zaman i\u00e7inde geli\u015fmi\u015f ve farkl\u0131 do\u011frulama y\u00f6ntemleri ortaya \u00e7\u0131km\u0131\u015ft\u0131r. G\u00fcn\u00fcm\u00fczde kullan\u0131lan bir\u00e7ok captcha t\u00fcr\u00fc bulunmaktad\u0131r.<\/span><\/p>\n

    Metin Tabanl\u0131 Captcha<\/span><\/h3>\n

    En eski captcha t\u00fcrlerinden biridir. Kullan\u0131c\u0131ya bozulmu\u015f veya karma\u015f\u0131k bir \u015fekilde g\u00f6sterilen harf ve say\u0131lar verilir. Kullan\u0131c\u0131 bu karakterleri do\u011fru \u015fekilde yazmal\u0131d\u0131r.<\/span><\/p>\n

    G\u00f6rsel Se\u00e7me Captcha<\/span><\/h3>\n

    Kullan\u0131c\u0131dan belirli nesneleri i\u00e7eren g\u00f6rselleri se\u00e7mesi istenir. Bu y\u00f6ntem \u00f6zellikle modern captcha sistemlerinde yayg\u0131nd\u0131r.<\/span><\/p>\n

    Matematik Captcha<\/span><\/h3>\n

    Kullan\u0131c\u0131dan basit bir matematik i\u015flemini \u00e7\u00f6zmesi istenir.<\/span><\/p>\n

    reCAPTCHA<\/span><\/h3>\n

    Google taraf\u0131ndan geli\u015ftirilen modern captcha sistemidir. En yayg\u0131n kullan\u0131lan captcha \u00e7\u00f6z\u00fcmlerinden biridir.<\/span><\/p>\n

    Invisible Captcha<\/span><\/h3>\n

    Bu captcha t\u00fcr\u00fc kullan\u0131c\u0131ya herhangi bir do\u011frulama g\u00f6stermez. Sistem arka planda kullan\u0131c\u0131 davran\u0131\u015flar\u0131n\u0131 analiz ederek bot olup olmad\u0131\u011f\u0131n\u0131 belirler. Kullan\u0131c\u0131 deneyimi a\u00e7\u0131s\u0131ndan en geli\u015fmi\u015f captcha t\u00fcrlerinden biridir.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

    Captcha, bir web sitesini ziyaret eden kullan\u0131c\u0131n\u0131n ger\u00e7ek bir insan m\u0131 yoksa otomatik bir bot mu oldu\u011funu anlamak i\u00e7in kullan\u0131lan g\u00fcvenlik do\u011frulama sistemidir. \u0130nternet sitelerinde \u00f6zellikle form g\u00f6nderimleri, kullan\u0131c\u0131 kay\u0131tlar\u0131 ve giri\u015f i\u015flemleri s\u0131ras\u0131nda kullan\u0131lan captcha sistemi, otomatik yaz\u0131l\u0131mlar\u0131n siteyi k\u00f6t\u00fcye kullanmas\u0131n\u0131 engellemeyi ama\u00e7lar. \u0130nternetteki bir\u00e7ok sald\u0131r\u0131 ve spam i\u015flemi, bot ad\u0131 verilen otomatik yaz\u0131l\u0131mlar […]<\/p>\n","protected":false},"author":1,"featured_media":5359,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=5362"}],"version-history":[{"count":1,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5362\/revisions"}],"predecessor-version":[{"id":5363,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5362\/revisions\/5363"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/media\/5359"}],"wp:attachment":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=5362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=5362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=5362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}