{"id":821,"date":"2024-11-14T12:24:34","date_gmt":"2024-11-14T09:24:34","guid":{"rendered":"https:\/\/markahost.com.tr\/blog\/?p=821"},"modified":"2025-10-24T15:33:40","modified_gmt":"2025-10-24T12:33:40","slug":"sifir-gun-acigi-nedir","status":"publish","type":"post","link":"https:\/\/markahost.com.tr\/blog\/sifir-gun-acigi-nedir\/","title":{"rendered":"S\u0131f\u0131r G\u00fcn A\u00e7\u0131\u011f\u0131 Nedir? S\u0131f\u0131r G\u00fcn G\u00fcvenlik A\u00e7\u0131\u011f\u0131 Hakk\u0131nda Bilmeniz Gerekenler"},"content":{"rendered":"

S\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131, sat\u0131c\u0131lar\u0131n ya da geli\u015ftiricilerin hen\u00fcz fark etmedi\u011fi yaz\u0131l\u0131m g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131n, siber korsanlar taraf\u0131ndan fark edilmesi \u015feklinde a\u00e7\u0131klamaktad\u0131r. Ayr\u0131ca s\u0131f\u0131r g\u00fcn terimi g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n yaz\u0131l\u0131m sat\u0131c\u0131s\u0131 taraf\u0131ndan s\u0131f\u0131r g\u00fcnd\u00fcr bilinmesi \u015feklinde yorumlanmaktad\u0131r. Yaz\u0131l\u0131m sat\u0131c\u0131s\u0131n\u0131n bir d\u00fczenleme yapabilmesi, g\u00fcncelleme ekleyebilmesi i\u00e7in s\u0131f\u0131r g\u00fcn\u00fcn\u00fcn oldu\u011funu yans\u0131tmaktad\u0131r. Bunun temel nedeni ise geli\u015ftiricilerin sorunu \u00e7\u00f6zmeye zaman\u0131 olmadan sald\u0131rganlar\u0131n g\u00fcvenlik a\u00e7\u0131\u011f\u0131ndan yararlanmas\u0131 anlam\u0131na gelmektedir. G\u00fcn\u00fcm\u00fczde s\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 sald\u0131r\u0131lar\u0131yla kar\u015f\u0131la\u015fan pek \u00e7ok geli\u015ftirici, sald\u0131r\u0131 ger\u00e7ekle\u015fene kadar b\u00f6yle bir g\u00fcvenlik a\u00e7\u0131kl\u0131\u011f\u0131n\u0131n var oldu\u011funun fark\u0131na varamamaktad\u0131r.<\/p>\n

G\u00fcvenlik a\u00e7\u0131\u011f\u0131, ya\u015fanmas\u0131 muhtemel bir sald\u0131r\u0131y\u0131 temsil etmektedir. Ayn\u0131 zamanda sald\u0131r\u0131n\u0131n ger\u00e7ekle\u015ftirilebilmesi i\u00e7in \u00f6nemli bir ad\u0131m olarak de\u011ferlendirilmektedir. S\u0131f\u0131r g\u00fcn sald\u0131r\u0131s\u0131n\u0131n tespit edilmesi ise bir hayli zordur. Bazen g\u00fcnler hatta aylar alabilmektedir. Durumdan istifade eden siber sald\u0131rganlar da bu bo\u015flu\u011fu kullanarak \u00e7e\u015fitli ki\u015fisel bilgileri, \u00f6nemli verileri ele ge\u00e7irmektedir. \u00c7e\u015fitli yaz\u0131l\u0131m sistemlerine k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m bula\u015ft\u0131rmak gibi ama\u00e7larla da kullan\u0131ld\u0131\u011f\u0131 bilinmektedir. Hassas verilerin s\u0131zd\u0131r\u0131lmas\u0131, \u00e7e\u015fitli platformlarda g\u00f6r\u00fcnt\u00fclenmesi gibi istenmeyen durumlar\u0131n kar\u015f\u0131n\u0131za \u00e7\u0131kmas\u0131 olas\u0131d\u0131r.<\/p>\n

S\u0131f\u0131r G\u00fcn A\u00e7\u0131\u011f\u0131 Sald\u0131r\u0131lar\u0131 Hangi G\u00fcvenlik A\u00e7\u0131klar\u0131n\u0131 Kullan\u0131l\u0131r?<\/h2>\n

S\u0131f\u0131r g\u00fcn g\u00fcvenlik a\u00e7\u0131l\u0131\u011f\u0131 birden fazla yanl\u0131\u015f durumdan kaynakl\u0131 olarak ortaya \u00e7\u0131kabilmektedir. Verilerin \u015fifreleme i\u015flemlerinin eksik yap\u0131lmas\u0131, yetkilendirmelerin eksik olmas\u0131, \u00e7e\u015fitli hatalar, parola g\u00fcvenli\u011finin d\u00fc\u015f\u00fck olmas\u0131, algoritma<\/a> bozuklu\u011fu gibi nedenlerden kaynakl\u0131 olacak \u015fekilde ya\u015fanabilmektedir.<\/p>\n

S\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131 aras\u0131nda en yayg\u0131n olan sald\u0131r\u0131lar web taray\u0131c\u0131s\u0131 gibi s\u00fcrekli olarak kullan\u0131lmakta olan programlardan olu\u015fmaktad\u0131r. Ayn\u0131 zamanda Excel, Word ya da PDF dosyalar\u0131 gibi s\u0131k\u00e7a kullan\u0131lan dosya t\u00fcrleri de bunlara \u00f6rnek olarak g\u00f6sterilmektedir. G\u00fcn\u00fcm\u00fczde zaman\u0131n\u0131n t\u00fcm\u00fcn\u00fc s\u0131f\u0131r g\u00fcn sald\u0131r\u0131s\u0131 yapabilmek i\u00e7in harcayan g\u00f6n\u00fcll\u00fc korsanlar bulunmaktad\u0131r. S\u00f6z konusu korsanlar, yayg\u0131n olarak kullan\u0131lan programlar\u0131, yaz\u0131l\u0131mlar\u0131 en avantajl\u0131 hedeflerden biri olarak de\u011ferlendirmektedir. S\u00f6z konusu sald\u0131r\u0131larda baz\u0131 g\u00fcvenlik a\u00e7\u0131klar\u0131ndan yararlan\u0131lmas\u0131 m\u00fcmk\u00fcnd\u00fcr. Bunlardan s\u00f6z edecek olursak da internet taray\u0131c\u0131lar\u0131, a\u00e7\u0131k kaynakl\u0131 bile\u015fenler, i\u015fletim sistemleri gibi se\u00e7enekler \u00f6rnek olarak g\u00f6sterilmektedir.<\/p>\n

S\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131n\u0131n kurban\u0131 olmak i\u00e7in potansiyel ta\u015f\u0131yan belirli ba\u015fl\u0131 adreslerin oldu\u011fu da bilinmektedir. Ulusal g\u00fcvenlikle ilgili bilgiler bar\u0131nd\u0131ranlar, de\u011ferli ticari s\u0131rlara sahip olan kurbanlar, listenin en \u00fcst s\u0131ralar\u0131nda yer almaktad\u0131r. \u00c7al\u0131nacak olan bilginin hassasiyeti, s\u0131f\u0131r g\u00fcn sald\u0131r\u0131s\u0131n\u0131n olu\u015fturaca\u011f\u0131 zarar\u0131 da etkilemektedir. Bunlardan s\u00f6z edecek olursak hassas t\u0131bbi veriler, finansal bilgiler, \u00fclke s\u0131rlar\u0131 gibi bilgiler sald\u0131r\u0131lar\u0131n daha cazip hale gelmesine yol a\u00e7maktad\u0131r. \u0130\u015fletmelerin \u00f6nemli i\u015f verilerine eri\u015fim sahibi olan ki\u015filer, b\u00fcy\u00fck i\u015fletmeler, devlet kurumlar\u0131 s\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 sald\u0131r\u0131lar\u0131nda hedef olanlar aras\u0131ndad\u0131r. ,<\/p>\n

S\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131n\u0131n hedefli olarak ger\u00e7ekle\u015fmesi genellikle b\u00fcy\u00fck kurumlara, profil de\u011feri y\u00fcksek olan ki\u015filere kar\u015f\u0131 ger\u00e7ekle\u015ftirilmektedir. Ancak s\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131 hedeflenmemi\u015f \u015fekilde de yap\u0131lmaktad\u0131r. Bunlar genel olarak i\u015fletim sistemi, taray\u0131c\u0131 gibi savunmas\u0131z sistemlerin kullan\u0131c\u0131lar\u0131n kar\u015f\u0131 yap\u0131lan sald\u0131r\u0131lard\u0131r. Temel ama\u00e7 ise kullan\u0131c\u0131 say\u0131s\u0131n\u0131n olabildi\u011fince fazla olmas\u0131d\u0131r. G\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 tespit etmeye \u00e7al\u0131\u015fan sald\u0131rganlar b\u00fcy\u00fck bot a\u011flar olu\u015fturarak en ideal zemini elde etmelerini sa\u011flamaktad\u0131r. Genel olarak bak\u0131ld\u0131\u011f\u0131nda da s\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131n\u0131n neden oldu\u011fu zararlar da bir hayli fazlad\u0131r.<\/p>\n

S\u0131f\u0131r G\u00fcn Sald\u0131r\u0131lar\u0131 Neden Zararl\u0131d\u0131r?<\/h2>\n

S\u0131f\u0131r g\u00fcn yani \u201cZero Day\u201d sald\u0131r\u0131lar\u0131 siber g\u00fcvenlik uzmanlar\u0131n\u0131n en \u00e7ok dikkat etti\u011fi durumlardan birisidir. \u00c7\u00fcnk\u00fc g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n istismar ger\u00e7ekle\u015fene kadar fark edilememesi, durumu geri d\u00f6n\u00fc\u015f\u00fc olmayan bir yola sokmaktad\u0131r. \u00c7o\u011funlukla siber g\u00fcvenlik uzmanlar\u0131 g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n fark\u0131na vard\u0131\u011f\u0131 zaman, yama yapma f\u0131rsat\u0131 olmadan sald\u0131r\u0131yla kar\u015f\u0131 kar\u015f\u0131ya kalabilmektedir.<\/p>\n

S\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 sald\u0131r\u0131lar\u0131ndan etkilenmemek, k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlardan korunmak amac\u0131yla \u00e7e\u015fitli yaz\u0131l\u0131mlar kullan\u0131lmaktad\u0131r. Bu yaz\u0131l\u0131mlar standart internet seyahatiniz s\u0131ras\u0131nda kar\u015f\u0131 kar\u015f\u0131ya kalabilece\u011finiz k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131n engellenmesini sa\u011flamaktad\u0131r. Ancak s\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 olu\u015fmas\u0131 halinde geleneksel siber g\u00fcvenlik stratejilerinin sundu\u011fu koruma yeterli olmamaktad\u0131r. Siteniz i\u00e7in \u00fc\u00e7\u00fcn\u00fc taraf programlar\u0131n\u0131 indirmek istedi\u011finiz zaman ise vir\u00fcsle kar\u015f\u0131la\u015fma riskiniz y\u00fckselmektedir. S\u0131f\u0131r g\u00fcn g\u00fcvenlik a\u00e7\u0131klar\u0131 noktas\u0131nda kurulu\u015flar\u0131n geleneksel y\u00f6ntemlerle s\u0131n\u0131rland\u0131r\u0131lmamas\u0131 gerekmektedir. Aksi taktirde s\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 sald\u0131r\u0131lar\u0131na a\u00e7\u0131k bir hale gelmi\u015f olabilirsiniz.<\/p>\n

Zero Day sald\u0131r\u0131lar\u0131 \u015firketler i\u00e7in de \u00f6nemli bir risk olarak de\u011ferlendirilmektedir. \u00c7\u00fcnk\u00fc g\u00fcvenlik a\u00e7\u0131\u011f\u0131 olu\u015fmas\u0131 yaz\u0131l\u0131m \u015firketlerinin zarara u\u011framas\u0131na neden olmaktad\u0131r. A\u00e7\u0131k duyurulmad\u0131\u011f\u0131 ve gizli tutuldu\u011fu zaman, s\u00fcre\u00e7 sald\u0131rganlar\u0131n daha \u00e7ok i\u015fine yaramaktad\u0131r. Yaz\u0131l\u0131m geli\u015ftiriciler taraf\u0131ndan yap\u0131lan yamalar ise s\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131n\u0131n olu\u015fturdu\u011fu kusurlar\u0131 ortadan kald\u0131rmaktad\u0131r. Buna kar\u015f\u0131n bu an\u0131nda ger\u00e7ekle\u015fen bir iyile\u015ftirme de\u011fildir. Sald\u0131rganlar\u0131n hareketleri devam etti\u011finden, yama yay\u0131nlanana kadar gerekli olan zaman\u0131 kulland\u0131klar\u0131 bilinmektedir.<\/p>\n

S\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131n\u0131n belirlenmesinin ard\u0131ndan yaz\u0131l\u0131m sat\u0131c\u0131s\u0131 yama olu\u015fturmaya ba\u015flamaktad\u0131r. Ayn\u0131 zamanda ya\u015fanan bilgi s\u0131z\u0131nt\u0131lar\u0131n\u0131 payda\u015flarla payla\u015fmal\u0131d\u0131r. Ancak g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131n d\u00fczeltilmesi san\u0131ld\u0131\u011f\u0131 kadar k\u0131sa s\u00fcrmemektedir. Bazen g\u00fcnler ve hatta haftalar alabilmektedir. Bu da sald\u0131rganlar\u0131n olduk\u00e7a uzun bir zaman\u0131n\u0131n olmas\u0131 anlam\u0131na gelmektedir. Sald\u0131r\u0131dan haberdar oldu\u011funuz anda yamalar\u0131n \u00e7al\u0131\u015fmaya ba\u015flamas\u0131 gerekmektedir.<\/p>\n

S\u0131f\u0131r G\u00fcn Sald\u0131r\u0131lar\u0131 Nas\u0131l \u0130\u015fler?<\/h2>\n

E-posta sald\u0131r\u0131lar\u0131, kimlik av\u0131 gibi pek \u00e7ok sald\u0131r\u0131 t\u00fcr\u00fc bulunmaktad\u0131r. S\u00f6z konusu sald\u0131rlar, dosyan\u0131n indirilmesi, ba\u011flant\u0131ya t\u0131klanmas\u0131 gibi durumlarla olu\u015fmaktad\u0131r. Ancak s\u0131f\u0131r g\u00fcn sald\u0131r\u0131s\u0131nda cihaza do\u011frudan bula\u015fma durumu s\u00f6z konusudur. \u0130\u015fletim sisteminin ya da yaz\u0131l\u0131m kusurunun k\u00f6t\u00fcye kullan\u0131lmas\u0131yla kar\u015f\u0131la\u015f\u0131lmaktad\u0131r. Bu da sald\u0131rganlar\u0131n ba\u015far\u0131 oran\u0131n\u0131n b\u00fcy\u00fck bir \u015fekilde artmas\u0131na neden olmaktad\u0131r.<\/p>\n

S\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131 yaln\u0131zca sald\u0131rganlar taraf\u0131ndan bilinmektedir. A\u00e7\u0131k a\u011fdan veya sanal sunucu<\/a>dan s\u0131z\u0131lmas\u0131 halinde su\u00e7lular direkt olarak sald\u0131rabilece\u011fi gibi strateji geli\u015ftirerek en do\u011fru zamanda sald\u0131rmay\u0131 da bekleyebilmektedir. S\u0131f\u0131r g\u00fcn istismarlar\u0131n\u0131n ba\u015flamas\u0131 yaz\u0131l\u0131m geli\u015ftiriciler hen\u00fcz fark\u0131nda de\u011filken ya\u015fanmaktad\u0131r. Bu da durumun daha b\u00fcy\u00fck bir avantaja d\u00f6n\u00fc\u015fmesine neden olmaktad\u0131r. Sald\u0131r\u0131yla beraber g\u00fcvenlik a\u00e7\u0131\u011f\u0131 g\u00fcvenlik ara\u015ft\u0131rmac\u0131lar\u0131 taraf\u0131ndan da fark edilmektedir. Bu s\u00fcre\u00e7te kullan\u0131c\u0131lara \u00e7e\u015fitli uyar\u0131lar iletilmektedir. Sonras\u0131nda ise antivir\u00fcs yay\u0131nlamas\u0131 yap\u0131lmaktad\u0131r. Ancak \u00e7e\u015fitli kurtarma denemeleri s\u0131ras\u0131nda sald\u0131rganlar\u0131n g\u00fcvenlik a\u00e7\u0131\u011f\u0131ndan yararlanman\u0131n farkl\u0131 yollar\u0131n\u0131 kullanaca\u011f\u0131 unutulmamal\u0131d\u0131r. Sat\u0131c\u0131lar\u0131n ve yaz\u0131l\u0131m geli\u015ftiricilerin g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 ortadan kald\u0131rmak i\u00e7in yama haz\u0131rlamas\u0131 gerekmektedir. Haz\u0131rl\u0131k s\u00fcreci farkl\u0131 zaman aral\u0131klar\u0131nda ger\u00e7ekle\u015firken haz\u0131r oldu\u011fu anda h\u0131zl\u0131ca uygulanmal\u0131d\u0131r. Ayr\u0131ca her a\u015famada sistemin farkl\u0131 savunmas\u0131z k\u0131s\u0131mlar\u0131n\u0131n oldu\u011fu da unutulmamal\u0131d\u0131r.<\/p>\n

\"\"<\/p>\n

S\u0131f\u0131r G\u00fcn A\u00e7\u0131\u011f\u0131 Nas\u0131l Tespit Edilir?<\/h2>\n

Genel olarak incelendi\u011fi zaman s\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131 s\u0131ras\u0131nda kar\u015f\u0131n\u0131za \u00e7\u0131kan g\u00fcvenlik a\u00e7\u0131klar\u0131, belirli aral\u0131klarla veri giri\u015fiyle belirlenmektedir. B\u00fcy\u00fck oranlarla veri giri\u015finin yap\u0131lmas\u0131, g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131n tespit edilmesinde \u00f6nemli bir rol \u00fcstlenmektedir. \u00c7\u00fcnk\u00fc a\u015f\u0131r\u0131 y\u00fcklenme, \u00e7\u00f6kme gibi davran\u0131\u015flar\u0131n ya\u015fan\u0131p ya\u015fanmad\u0131\u011f\u0131, hatalar\u0131n anla\u015f\u0131l\u0131p anla\u015f\u0131lmad\u0131\u011f\u0131 gibi durumlar g\u00f6zden ge\u00e7irilmektedir. S\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131 sald\u0131r\u0131s\u0131na maruz kalan \u015firketler, kurulu\u015flar herhangi bir hizmetten kaynakl\u0131 olmayan \u015f\u00fcpheli taramalarla kar\u015f\u0131la\u015fabilmektedir.<\/p>\n

S\u0131f\u0131r g\u00fcn tehditlerinin tespit edilmesi amac\u0131yla kullan\u0131lan y\u00f6ntemler ise m\u00fckemmel de\u011fildir. Kapsaml\u0131 olmamalar\u0131n\u0131n yan\u0131 s\u0131ra y\u00f6ntemlerin birlikte kullan\u0131ld\u0131\u011f\u0131 da g\u00f6zlemlenen durumlar aras\u0131ndad\u0131r. S\u0131f\u0131r g\u00fcn g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n var oldu\u011funa dair bilgi alabilece\u011finiz baz\u0131 stratejilerin oldu\u011fu da unutulmamal\u0131d\u0131r. Bunlardan s\u00f6z edecek olursak;<\/p>\n

    \n
  • \u0130mza tabanl\u0131 uygulama, g\u00fcvenlik izleme s\u00fcre\u00e7lerinde ilk zamanlardan bu yana kullan\u0131lmaya devam edilmektedir. K\u00f6t\u00fc ama\u00e7l\u0131 kodlar\u0131n varl\u0131\u011f\u0131n\u0131n tespit edilmesini sa\u011flamaktad\u0131r. Ayn\u0131 zamanda potansiyel tehditlerin taramas\u0131 s\u0131ras\u0131nda yerel dosyalar i\u00e7in referans sunmaktad\u0131r. S\u00f6z konusu y\u00f6ntem yaln\u0131zca bilinen tehditleri alg\u0131layabilmektedir. Bu y\u00fczden de s\u0131f\u0131r\u0131nc\u0131 g\u00fcn sald\u0131r\u0131lar\u0131n\u0131n b\u00fcy\u00fck bir b\u00f6l\u00fcm\u00fcn\u00fc alg\u0131lamada zorlanmaktad\u0131r.<\/li>\n
  • \u0130statistik tabanl\u0131 alg\u0131lamada makine \u00f6\u011freniminden faydalan\u0131lmaktad\u0131r. Bu sayede daha \u00f6nceki d\u00f6nemlerde ya\u015fanm\u0131\u015f olan istismarlara ait veriler toplanmaktad\u0131r. S\u0131f\u0131r\u0131nc\u0131 g\u00fcn tehditlerinin tespit edilmesi amac\u0131yla kullan\u0131lan bu g\u00fcvenli davran\u0131\u015f incelendi\u011fi zaman faydal\u0131 ad\u0131mlardan birisidir.<\/li>\n
  • Kullan\u0131c\u0131lar\u0131n sahip oldu\u011fu yaz\u0131l\u0131mlarla olan etkile\u015fimleri incelenmektedir. Davran\u0131\u015fa ba\u011fl\u0131 alg\u0131lama y\u00f6nteminde davran\u0131\u015f temelli olarak sald\u0131r\u0131lar tespit edilmektedir. Gelecek d\u00f6nemki davran\u0131\u015flar \u00f6\u011frenilirken beklenmeyen davran\u0131\u015flar da ortadan kald\u0131r\u0131lmaktad\u0131r.<\/li>\n<\/ul>\n

    S\u0131k\u00e7a Sorulan Sorular<\/h2>\n

    Zero Day Exploit Nedir?<\/h3>\n

    Zero day exploit<\/strong>, yaz\u0131l\u0131mda ke\u015ffedilen bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n, geli\u015ftirici veya sat\u0131c\u0131 taraf\u0131ndan hen\u00fcz fark edilmeden siber sald\u0131rganlar taraf\u0131ndan kullan\u0131lmas\u0131d\u0131r. Bu t\u00fcr a\u00e7\u0131klar genellikle i\u015fletim sistemi, web taray\u0131c\u0131s\u0131 veya pop\u00fcler uygulamalarda g\u00f6r\u00fcl\u00fcr. Sald\u0131rganlar bu g\u00fcvenlik bo\u015fluklar\u0131n\u0131 kullanarak sisteme eri\u015fim sa\u011flayabilir veya zararl\u0131 yaz\u0131l\u0131mlar y\u00fckleyebilir.<\/p>\n

    Zero Day Nedir?<\/h3>\n

    Zero day nedir<\/strong> sorusu, siber g\u00fcvenlikte s\u0131kl\u0131kla kar\u015f\u0131m\u0131za \u00e7\u0131kan bir konudur. \u201cS\u0131f\u0131r g\u00fcn\u201d terimi, bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n geli\u015ftirici taraf\u0131ndan fark edilmedi\u011fi ilk g\u00fcn\u00fc ifade eder. Yani geli\u015ftiricinin a\u00e7\u0131\u011f\u0131 d\u00fczeltmek i\u00e7in hi\u00e7 zaman\u0131 yoktur. Bu nedenle s\u0131f\u0131r g\u00fcn sald\u0131r\u0131lar\u0131, hem kurumlar hem de bireysel kullan\u0131c\u0131lar i\u00e7in y\u00fcksek risk ta\u015f\u0131r.<\/p>\n

    Exploit Ne Demek?<\/h3>\n

    Exploit ne demek<\/strong> sorusunun cevab\u0131, bir yaz\u0131l\u0131m ya da sistemdeki g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n k\u00f6t\u00fcye kullan\u0131lmas\u0131 anlam\u0131na gelir. Exploit, sald\u0131rganlar\u0131n sistem \u00fczerinde yetkisiz i\u015flemler yapmas\u0131n\u0131 sa\u011flayan kod, ara\u00e7 veya y\u00f6ntemlerdir. Genellikle k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131n bir par\u00e7as\u0131 olarak kullan\u0131l\u0131r ve sistemin savunmas\u0131z b\u00f6l\u00fcmlerinden faydalan\u0131r.<\/p>\n

    Zero Day Attack Ne Anlama Gelir?<\/h3>\n

    Zero day attack<\/strong>, yani s\u0131f\u0131r g\u00fcn sald\u0131r\u0131s\u0131, yaz\u0131l\u0131m geli\u015ftiricisinin hen\u00fcz fark etmedi\u011fi bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131 \u00fczerinden ger\u00e7ekle\u015ftirilen sald\u0131r\u0131d\u0131r. Bu sald\u0131r\u0131lar, antivir\u00fcs programlar\u0131 veya g\u00fcvenlik duvarlar\u0131 taraf\u0131ndan kolayca tespit edilemez. Bu nedenle erken fark edilmediklerinde ciddi veri ihlallerine yol a\u00e7abilirler.<\/p>\n","protected":false},"excerpt":{"rendered":"

    S\u0131f\u0131r g\u00fcn a\u00e7\u0131\u011f\u0131, sat\u0131c\u0131lar\u0131n ya da geli\u015ftiricilerin hen\u00fcz fark etmedi\u011fi yaz\u0131l\u0131m g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131n, siber korsanlar taraf\u0131ndan fark edilmesi \u015feklinde a\u00e7\u0131klamaktad\u0131r.<\/p>\n","protected":false},"author":2,"featured_media":822,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=821"}],"version-history":[{"count":5,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/821\/revisions"}],"predecessor-version":[{"id":1640,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/821\/revisions\/1640"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media\/822"}],"wp:attachment":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}