{"id":3725,"date":"2022-08-02T13:14:44","date_gmt":"2022-08-02T10:14:44","guid":{"rendered":"http:\/\/turknetwp.local\/?p=3725"},"modified":"2023-01-30T13:28:55","modified_gmt":"2023-01-30T10:28:55","slug":"siem-nedir","status":"publish","type":"post","link":"https:\/\/www.turk.net\/blog\/siem-nedir\/","title":{"rendered":"SIEM Nedir?\u00a0"},"content":{"rendered":"

\u0130nternet g\u00fcn\u00fcm\u00fczde en \u00e7ok vakit ge\u00e7irdi\u011fimiz yerdir. \u0130nternet sayesinde elimizin alt\u0131nda adeta bir hazine bulunmaktad\u0131r. T\u00fcm bu bilgilerin i\u00e7inde bizim de sahip oldu\u011fumuz ki\u015fisel verilerimiz vard\u0131r. E\u011fer bu verilerimiz korunmaz ise k\u00f6t\u00fc ama\u00e7l\u0131 insanlar sahip olabilir. B\u00f6yle bir durumla kar\u015f\u0131la\u015f\u0131lmamas\u0131 i\u00e7in \u00e7al\u0131\u015fmalar ve iyile\u015ftirmeler yap\u0131lmaktad\u0131r. SIEM de bu \u00e7al\u0131\u015fmalar s\u0131ras\u0131nda ortaya \u00e7\u0131km\u0131\u015f bir sistemdir.\u00a0<\/span><\/p>\n

SIEM Nedir?\u00a0<\/span><\/h2>\n

SIEM sisteminin a\u00e7\u0131l\u0131m\u0131 \u201cSecurity Information And Event Management\u201dd\u0131r. T\u00fcrk\u00e7e kar\u015f\u0131l\u0131\u011f\u0131 ise \u201cG\u00fcvenlik Bilgisi ve Onay \u0130zleme Sistemi\u201ddir.\u00a0 SIM ( Security Information Management) ve SEM ( Security Event\u00a0 Management)\u00a0 g\u00fcvenlik teknolojilerinin birle\u015fiminden ortaya \u00e7\u0131kan sistemlerdir. Bu sistemler ile her iki g\u00fcvenlik teknolojisi tek bir yerde toplanm\u0131\u015ft\u0131r. B\u00f6ylelikle g\u00fcvenlik bilgisi ve onay izleme sistemi olan SIEM ortaya \u00e7\u0131km\u0131\u015ft\u0131r.<\/span><\/p>\n

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

SIEM\u2019in temel amac\u0131 g\u00fcvenlik ile ilgili t\u00fcm bilgileri takip ve analiz ederek toplamakt\u0131r. Bu veriler ise; ald\u0131\u011f\u0131 yer kullan\u0131c\u0131lar, a\u011f cihazlar\u0131, g\u00fcvenlik duvarlar\u0131d\u0131r. SIEM\u2019in ne i\u015fe yarad\u0131\u011f\u0131n\u0131 anlamak i\u00e7in SIM ve SEM\u2019i de anlamak gerekir.\u00a0<\/span><\/p>\n

    \n
  • SIM (Security Information Management): G\u00fcvenlik bilgileri y\u00f6netimi demektir. Temel i\u015flevi depolama yapmak, analiz i\u00e7in veri toplamak, toplanan verilerin raporlanmas\u0131n\u0131 sa\u011flamakt\u0131r.<\/span><\/li>\n
  • SEM(Security Event\u00a0 Management): G\u00fcvenlik olay\u0131 y\u00f6netimi anlam\u0131na gelir. G\u00fcvenlik ile ilgili olaylardan sorumludur. Bunlar\u0131n i\u00e7inde ger\u00e7ek zamanl\u0131 izleme yapmak, tehdit alg\u0131lamak, g\u00fcvenlik olaylar\u0131n\u0131 izlemek ve olas\u0131 bir tehditte uyar\u0131 vermek bulunur.<\/span><\/li>\n<\/ul>\n

    Art\u0131k SIEM\u2019in ne i\u015fe yarad\u0131\u011f\u0131n\u0131 daha iyi anlayabilmemiz m\u00fcmk\u00fcn. SIEM, SIM ve SEM\u2019in t\u00fcm yapabildiklerini tek bir yerde toplamaktad\u0131r. \u00d6rne\u011fin evinizde bilgisayar ba\u015f\u0131nda oturuyorsunuz ve a\u011f\u0131n\u0131zda olas\u0131 bir g\u00fcvenlik tehdidi olu\u015ftu. SIEM sistemi ile a\u011f cihazlar\u0131ndan toplanan loglar bu tehditi tespit eder ve engeller. B\u00f6ylelikle sisteminize herhangi bir zarar verilmesi \u00f6nlenmi\u015f olur.<\/span>
    \n<\/span><\/p>\n

    SIEM Neden Gereklidir?<\/span><\/h2>\n

    SIEM size tek bir sistemde; veri toplama, arama, analiz etme ve bunlar\u0131n g\u00fcvenli\u011fini sa\u011flama hizmeti verir. \u00c7ok b\u00fcy\u00fck miktardaki verileri toplar, birle\u015ftirir ve eri\u015febilir bir \u015fekilde ger\u00e7ek zamanl\u0131 olarak sunar. SIEM kullanmak sizlere pek \u00e7ok avantaj sa\u011flayacakt\u0131r. Bu avantajlar \u015fu \u015fekilde listelenebilir;<\/span><\/p>\n

      \n
    • G\u00fcvenlik izleme ve takibi yapma,<\/span><\/li>\n
    • Geli\u015fmi\u015f tehdit alg\u0131lama sistemine sahip olma,<\/span><\/li>\n
    • G\u00fcnl\u00fck toplama,<\/span><\/li>\n
    • Gereklilik halinde uyar\u0131 ve bildirimler g\u00f6nderme,<\/span><\/li>\n
    • G\u00fcvenlik olaylar\u0131n\u0131 h\u0131zl\u0131 bir \u015fekilde tespit etme ve aksiyon alma.<\/span><\/li>\n<\/ul>\n

      SIEM olas\u0131 bir tehdit olu\u015fumunda kendine bir yol haritas\u0131 \u00e7izer. Tek bir merkezden kolayl\u0131kla y\u00f6netimi ger\u00e7ekle\u015ftirebilir. Zararl\u0131 bir i\u00e7eri\u011fi a\u011f\u0131n\u0131za girmeye \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnelim. Bu durumda SIEM\u00a0 bu i\u00e7eri\u011fin tespitini h\u0131zl\u0131 bir \u015fekilde ger\u00e7ekle\u015ftirir ve an\u0131nda aksiyon al\u0131n\u0131r. G\u00fcn\u00fcm\u00fczde veri g\u00fcvenli\u011fi olduk\u00e7a \u00f6nemlidir. Bu verileri korumaya \u00e7al\u0131\u015fan yaz\u0131l\u0131mlar ve sistemler oldu\u011fu gibi ele ge\u00e7irmeye \u00e7al\u0131\u015fan ya da zarar vermeye \u00e7al\u0131\u015fan sistemler de vard\u0131r. Bu t\u00fcr k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer a\u011f\u0131n\u0131zdaki a\u00e7\u0131klar\u0131 bulmaya ve farkl\u0131 y\u00f6ntemlere bu a\u00e7\u0131klardan girerek zarar vermeye \u00e7al\u0131\u015f\u0131rlar. Bu zararlar do\u011frudan cihaz\u0131 etkileyebilece\u011fi gibi verilerinizin \u00e7al\u0131nmas\u0131na da neden olabilir.\u00a0 SIEM i\u015fte burada koruma kalkan\u0131 g\u00f6rerek her t\u00fcrl\u00fc zararl\u0131 ki\u015filerden sisteminizi korur.\u00a0 Verilerin korunmas\u0131na y\u00f6nelik \u00fclkemizde\u00a0 de uygulanan yasalar ve protokoller vard\u0131r. Ki\u015fisel Verilerin Korunmas\u0131 Kanunu (KVKK) bunlardan biridir. KVKK ile belirtilen maddeler kolayl\u0131kla SIEM ile olu\u015fturulabilir. B\u00f6ylelikle KVVK maddelerinde yer alan g\u00fcvenlik olaylar\u0131 S\u0130EM ile \u00e7ok daha h\u0131zl\u0131 \u00e7\u00f6z\u00fclebilir. SIEM\u2019in kullan\u0131c\u0131lar\u0131na sundu\u011fu bir di\u011fer avantaj ise loglar\u0131n \u201cdashboard\u201d ad\u0131 verilen tablo ve grafiklerle g\u00f6sterilmesidir. Bu g\u00f6rselle\u015ftirmeler sayesinde ger\u00e7ek zamanl\u0131 olarak kontrol edilebilir ve olas\u0131 bir sorunu h\u0131zl\u0131ca tespit edebilirsiniz.<\/span>
      \n<\/span><\/p>\n

      \u00d6zetle, SIEM bir g\u00fcvenlik sistemidir. Veri toplama, analiz etme, takip etme, uyar\u0131 g\u00f6nderme gibi farkl\u0131 bir\u00e7ok avantaj sa\u011flar.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

      \u0130nternet g\u00fcn\u00fcm\u00fczde en \u00e7ok vakit ge\u00e7irdi\u011fimiz yerdir. \u0130nternet sayesinde elimizin alt\u0131nda adeta bir hazine bulunmaktad\u0131r. T\u00fcm bu bilgilerin i\u00e7inde bizim de sahip oldu\u011fumuz ki\u015fisel verilerimiz vard\u0131r. E\u011fer bu verilerimiz korunmaz ise k\u00f6t\u00fc ama\u00e7l\u0131 insanlar sahip olabilir. B\u00f6yle bir durumla kar\u015f\u0131la\u015f\u0131lmamas\u0131 i\u00e7in \u00e7al\u0131\u015fmalar ve iyile\u015ftirmeler yap\u0131lmaktad\u0131r. SIEM de bu \u00e7al\u0131\u015fmalar s\u0131ras\u0131nda ortaya \u00e7\u0131km\u0131\u015f bir sistemdir.\u00a0 SIEM […]<\/p>\n","protected":false},"author":7,"featured_media":4841,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internet-terimleri"],"acf":[],"yoast_head":"\nSIEM Nedir?\u00a0 - Turknet Blog<\/title>\n<meta name=\"description\" content=\"SIEM nedir? Neden gereklidir ve ne i\u015fe yarar? 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