{"id":631,"date":"2024-04-28T01:12:06","date_gmt":"2024-04-27T22:12:06","guid":{"rendered":"https:\/\/5brand.co\/blog\/?p=631"},"modified":"2024-04-28T01:12:06","modified_gmt":"2024-04-27T22:12:06","slug":"windows-macos-ve-linuxta-bir-guvenlik-acigi-kesfedildi","status":"publish","type":"post","link":"https:\/\/5brand.co\/blog\/windows-macos-ve-linuxta-bir-guvenlik-acigi-kesfedildi\/","title":{"rendered":"Windows, macOS ve Linux&#8217;ta  Bir G\u00fcvenlik A\u00e7\u0131\u011f\u0131 Ke\u015ffedildi"},"content":{"rendered":"<p>Son zamanlarda birden \u00e7ok i\u015fletim sistemini hedef alan k\u00f6t\u00fc yaz\u0131l\u0131mlar olduk\u00e7a pop\u00fcler hale geldi. Bir siber g\u00fcvenlik \u015firketi, Aral\u0131k 2021\u2019de <strong>Windows, Mac ve Linux <\/strong>i\u00e7in tehdit olu\u015fturan yeni bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131 ke\u015ffetti.<\/p>\n<p>Intezer adl\u0131 yaz\u0131l\u0131m g\u00fcvenlik firmas\u0131ndan bir grup ara\u015ft\u0131rmac\u0131, bir e\u011fitim kurumunun Linux tabanl\u0131 Web sunucunsunda k\u00f6t\u00fc ama\u00e7l\u0131 bir yaz\u0131l\u0131m ke\u015ffetti. Ara\u015ft\u0131rmac\u0131lar, SysJoker olarak adland\u0131rd\u0131klar\u0131 Back Door (Arka kap\u0131) hatas\u0131n\u0131 <strong>ke\u015ffettiklerini duyurdu<\/strong> ve g\u00fcvenlik a\u00e7\u0131\u011f\u0131 hakk\u0131nda bilgi verdi.<\/p>\n<p><b>Casusluk ve fidye sald\u0131r\u0131lar\u0131na yol a\u00e7abilir<\/b><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/5brand.co\/blog\/wp-content\/uploads\/2024\/04\/windows-macos-ve-linuxta-bir-guvenlik-acigi-kesfedildi-0-IuctRjvi.jpeg\"\/><\/p>\n<p>\u0130lk olarak bir e\u011fitim kurumunun Linux tabanl\u0131 Web sunucusuna yap\u0131lan bir sald\u0131r\u0131 s\u0131ras\u0131nda ke\u015ffedilen SysJoker adl\u0131 g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131n, daha sonraki ara\u015ft\u0131rmalarla Mac ve Windows s\u00fcr\u00fcmlerinde de g\u00f6r\u00fcld\u00fc\u011f\u00fc ortaya \u00e7\u0131kt\u0131. Bir <strong>sistem g\u00fcncellemesi gibi g\u00f6r\u00fcnen<\/strong> bu yaz\u0131l\u0131m kullan\u0131c\u0131lar i\u00e7in ciddi oranda tehdit olu\u015fturuyordu.<\/p>\n<p>G\u00fcvenlik a\u00e7\u0131\u011f\u0131 Google Drive\u2019daki bir metin dosyas\u0131ndan al\u0131nan bir dizenin kodunu \u00e7\u00f6zerek kontrol sunucusunu etki alan\u0131n\u0131 olu\u015fturuyordu. C++ yaz\u0131l\u0131m diliyle yaz\u0131lan g\u00fcvenlik a\u00e7\u0131\u011f\u0131 SysJoker; Linux, Windows ya da Mindows k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m arama motoru olan VirusTotal\u2019de alg\u0131lanmad\u0131. Ara\u015ft\u0131rmac\u0131lar\u0131n analizleri s\u0131ras\u0131nda da sunucu \u00fc\u00e7 kez de\u011fi\u015fti, bu sald\u0131rgan\u0131n <strong>aktif oldu\u011funu ve vir\u00fcsl\u00fc cihazlar\u0131 izledi\u011fini <\/strong>g\u00f6sterdi.<\/p>\n<p>Bu k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m\u0131n ke\u015ffedili\u015finin \u00f6nemli olmas\u0131n\u0131n ilk nedeni, bu a\u00e7\u0131\u011f\u0131n di\u011ferleri gibi belirli bir i\u015fletim sistemi i\u00e7in de\u011fil hibrit bir yap\u0131 ile \u00e7al\u0131\u015farak <strong>t\u00fcm platformlar\u0131 tehdit etmesiydi.<\/strong> Bir di\u011fer nedeni de bu a\u00e7\u0131\u011f\u0131n s\u0131f\u0131rdan ve d\u00f6rt ayr\u0131 komuta ve kontrol sunucusundan yararlan\u0131larak yaz\u0131lmas\u0131yd\u0131. Bu da onu geli\u015ftiren ve kullanan ki\u015filerin \u00f6nemli kaynaklara yat\u0131r\u0131m yapt\u0131\u011f\u0131n\u0131 g\u00f6steriyordu.<\/p>\n<p>Ara\u015ft\u0131rmac\u0131lar, hedeflenen kurulu\u015flar\u0131 ve k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131 izlemelerinin sonucunda SkyJoker\u2019in <strong>casusluk ve fidye yaz\u0131l\u0131m\u0131 sald\u0131r\u0131s\u0131na<\/strong> yol a\u00e7abilece\u011fini belirtti.<\/p>\n<div>  <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Bir siber g\u00fcvenlik \u015firketi, Windows, macOS ve Linux i\u015fletim sistemlerini \u00e7al\u0131\u015ft\u0131rabilen cihazlar i\u00e7in yaz\u0131lm\u0131\u015f ve daha \u00f6nce hi\u00e7 g\u00f6r\u00fclmemi\u015f bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131 tespit etti. Sistem g\u00fcncellemesi gibi g\u00f6r\u00fcnen yaz\u0131l\u0131m, pek \u00e7ok kullan\u0131c\u0131 i\u00e7in tehdit olu\u015fturuyordu.<\/p>\n","protected":false},"author":1,"featured_media":632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[269,268,78],"class_list":["post-631","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-yazilim","tag-guvenlik-acigi","tag-sunucu","tag-yazilim"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Windows, macOS ve Linux&#039;ta Bir G\u00fcvenlik A\u00e7\u0131\u011f\u0131 Ke\u015ffedildi - 5brand Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/5brand.co\/blog\/windows-macos-ve-linuxta-bir-guvenlik-acigi-kesfedildi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Windows, macOS ve Linux&#039;ta Bir G\u00fcvenlik A\u00e7\u0131\u011f\u0131 Ke\u015ffedildi\" \/>\n<meta property=\"og:description\" content=\"Bir siber g\u00fcvenlik \u015firketi, Windows, macOS ve Linux i\u015fletim sistemlerini \u00e7al\u0131\u015ft\u0131rabilen cihazlar i\u00e7in yaz\u0131lm\u0131\u015f ve daha \u00f6nce hi\u00e7 g\u00f6r\u00fclmemi\u015f bir g\u00fcvenlik a\u00e7\u0131\u011f\u0131 tespit etti. 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