{"id":10644,"date":"2026-04-13T17:34:46","date_gmt":"2026-04-13T14:34:46","guid":{"rendered":"https:\/\/www.turk.net\/blog\/?p=10644"},"modified":"2026-04-13T17:34:46","modified_gmt":"2026-04-13T14:34:46","slug":"zararli-yazilim-malware-nedir-turleri-ve-korunma-yollari","status":"publish","type":"post","link":"https:\/\/www.turk.net\/blog\/zararli-yazilim-malware-nedir-turleri-ve-korunma-yollari\/","title":{"rendered":"Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? T\u00fcrleri ve Korunma Yollar\u0131"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar (malware), cihazlara izinsiz eri\u015fim sa\u011flamak, veri toplamak veya sistemlere zarar vermek amac\u0131yla geli\u015ftirilen yaz\u0131l\u0131m t\u00fcrleridir. G\u00fcn\u00fcm\u00fczde bireysel kullan\u0131c\u0131lar ve kurumlar i\u00e7in \u00f6nemli bir g\u00fcvenlik riski olu\u015fturan bu yaz\u0131l\u0131mlar, farkl\u0131 y\u00f6ntemlerle yay\u0131labilir ve \u00e7e\u015fitli ama\u00e7larla kullan\u0131labilir.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131m (malware), bilgisayar, ak\u0131ll\u0131 telefon veya a\u011f sistemlerine zarar vermek ya da yetkisiz eri\u015fim sa\u011flamak amac\u0131yla geli\u015ftirilen yaz\u0131l\u0131mlar\u0131n genel ad\u0131d\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bu yaz\u0131l\u0131mlar; veri \u00e7alma, sistemleri kilitleme, kullan\u0131c\u0131 faaliyetlerini izleme veya cihaz performans\u0131n\u0131 d\u00fc\u015f\u00fcrme gibi farkl\u0131 ama\u00e7larla kullan\u0131labilir. Malware terimi; vir\u00fcsler, trojanlar, fidye yaz\u0131l\u0131mlar\u0131 ve casus yaz\u0131l\u0131mlar gibi bir\u00e7ok farkl\u0131 zararl\u0131 yaz\u0131l\u0131m t\u00fcr\u00fcn\u00fc kapsayan geni\u015f bir kavramd\u0131r.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131mlar Ne \u0130\u015fe Yarar ve Nas\u0131l Yay\u0131l\u0131r?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar, genellikle kullan\u0131c\u0131dan habersiz \u015fekilde sistemlere s\u0131zarak belirli hedefler do\u011frultusunda \u00e7al\u0131\u015f\u0131r. Ama\u00e7lar\u0131; veri toplamak, sistemleri kontrol etmek veya maddi kazan\u00e7 elde etmek olabilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Yay\u0131lma y\u00f6ntemleri ise farkl\u0131 \u015fekillerde ger\u00e7ekle\u015fir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>E-posta ekleri ve sahte linkler:<\/b><span style=\"font-weight: 400;\"> Kullan\u0131c\u0131y\u0131 yan\u0131ltarak zararl\u0131 dosya indirilmesini sa\u011flar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>G\u00fcvenilmeyen yaz\u0131l\u0131m indirmeleri:<\/b><span style=\"font-weight: 400;\"> Lisanss\u0131z veya sahte programlar \u00fczerinden bula\u015fabilir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Zararl\u0131 web siteleri:<\/b><span style=\"font-weight: 400;\"> Ziyaret s\u0131ras\u0131nda arka planda k\u00f6t\u00fc ama\u00e7l\u0131 kod \u00e7al\u0131\u015ft\u0131rabilir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>USB ve harici cihazlar:<\/b><span style=\"font-weight: 400;\"> Fiziksel ba\u011flant\u0131 yoluyla bula\u015fma ger\u00e7ekle\u015febilir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>G\u00fcncel olmayan yaz\u0131l\u0131mlar:<\/b><span style=\"font-weight: 400;\"> G\u00fcvenlik a\u00e7\u0131klar\u0131 \u00fczerinden sisteme s\u0131zabilir.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bu y\u00f6ntemler, kullan\u0131c\u0131 hatas\u0131 veya sistem a\u00e7\u0131klar\u0131 \u00fczerinden zararl\u0131 yaz\u0131l\u0131mlar\u0131n yay\u0131lmas\u0131na neden olur.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131m T\u00fcrleri Nelerdir?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar, kullan\u0131m ama\u00e7lar\u0131na ve \u00e7al\u0131\u015fma y\u00f6ntemlerine g\u00f6re farkl\u0131 t\u00fcrlere ayr\u0131l\u0131r. Her bir t\u00fcr, sistemlere farkl\u0131 \u015fekillerde zarar verebilir ve farkl\u0131 g\u00fcvenlik riskleri olu\u015fturur.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Vir\u00fcs (Virus)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Vir\u00fcsler, kendilerini ba\u015fka dosyalara ekleyerek \u00e7o\u011falan zararl\u0131 yaz\u0131l\u0131mlard\u0131r. Genellikle bir dosya \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda aktif h\u00e2le gelir ve sistemdeki di\u011fer dosyalara bula\u015farak yay\u0131lmaya devam eder. Performans d\u00fc\u015f\u00fc\u015f\u00fcne, veri kayb\u0131na ve sistem hatalar\u0131na neden olabilir.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Truva At\u0131 (Trojan)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Truva atlar\u0131, zarars\u0131z veya faydal\u0131 bir yaz\u0131l\u0131m gibi g\u00f6r\u00fcnerek kullan\u0131c\u0131y\u0131 yan\u0131lt\u0131r. Kullan\u0131c\u0131 taraf\u0131ndan indirildi\u011finde veya \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda sisteme s\u0131zar ve arka planda farkl\u0131 zararl\u0131 i\u015flemler ger\u00e7ekle\u015ftirebilir. Yetkisiz eri\u015fim sa\u011flama ve veri \u00e7alma gibi ama\u00e7larla kullan\u0131l\u0131r.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Fidye Yaz\u0131l\u0131m\u0131 (Ransomware)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Fidye yaz\u0131l\u0131mlar\u0131, sistemdeki dosyalar\u0131 \u015fifreleyerek eri\u015fimi engeller. Kullan\u0131c\u0131dan bu dosyalar\u0131n tekrar a\u00e7\u0131labilmesi i\u00e7in \u00f6deme talep edilir. \u00d6zellikle bireysel kullan\u0131c\u0131lar ve kurumlar i\u00e7in ciddi veri kayb\u0131 riskleri olu\u015fturur.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Casus Yaz\u0131l\u0131m (Spyware)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Casus yaz\u0131l\u0131mlar, kullan\u0131c\u0131lar\u0131n internet hareketlerini, giri\u015f bilgilerini ve ki\u015fisel verilerini izlemek amac\u0131yla geli\u015ftirilir. Genellikle fark edilmeden \u00e7al\u0131\u015f\u0131r ve elde edilen verileri \u00fc\u00e7\u00fcnc\u00fc taraflara iletebilir.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Reklam Yaz\u0131l\u0131m\u0131 (Adware)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Reklam yaz\u0131l\u0131mlar\u0131, kullan\u0131c\u0131ya s\u00fcrekli reklam g\u00f6steren zararl\u0131 veya istenmeyen yaz\u0131l\u0131mlard\u0131r. Taray\u0131c\u0131 y\u00f6nlendirmeleri, a\u00e7\u0131l\u0131r pencereler ve istenmeyen reklam i\u00e7erikleri ile kullan\u0131c\u0131 deneyimini olumsuz etkiler.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Solucan (Worm)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Solucanlar, kullan\u0131c\u0131 onay\u0131 gerektirmeden a\u011f \u00fczerinden ba\u011f\u0131ms\u0131zca yay\u0131lan zararl\u0131 yaz\u0131l\u0131mlard\u0131r. G\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 kullanarak bir cihazdan di\u011ferine kendi kopyalar\u0131n\u0131 otomatik olarak aktar\u0131rlar. S\u00fcrekli \u00e7o\u011falma yetenekleri sayesinde a\u011f trafi\u011fini ve bant geni\u015fli\u011fini a\u015f\u0131r\u0131 t\u00fcketerek sistemlerin yava\u015flamas\u0131na veya tamamen \u00e7\u00f6kmesine neden olurlar.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Keylogger<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Keylogger yaz\u0131l\u0131mlar\u0131, klavye hareketlerini kaydederek kullan\u0131c\u0131 ad\u0131, \u015fifre ve di\u011fer hassas bilgileri ele ge\u00e7irmeyi hedefler. Genellikle fark edilmeden arka planda \u00e7al\u0131\u015f\u0131r ve ciddi g\u00fcvenlik ihlallerine neden olabilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Her bir zararl\u0131 yaz\u0131l\u0131m t\u00fcr\u00fc, farkl\u0131 sald\u0131r\u0131 y\u00f6ntemleri ve hedefler do\u011frultusunda geli\u015ftirilmi\u015ftir. Bu nedenle g\u00fcvenlik \u00f6nlemleri al\u0131n\u0131rken t\u00fcm bu tehdit t\u00fcrleri g\u00f6z \u00f6n\u00fcnde bulundurulmal\u0131d\u0131r.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131mlar Nas\u0131l Tespit Edilir?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar \u00e7o\u011fu zaman arka planda \u00e7al\u0131\u015ft\u0131\u011f\u0131 i\u00e7in do\u011frudan fark edilmeyebilir. Ancak baz\u0131 belirtiler, sistemde \u015f\u00fcpheli bir durum oldu\u011funu g\u00f6sterebilir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cihaz\u0131n normalden yava\u015f \u00e7al\u0131\u015fmas\u0131<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bilinmeyen programlar\u0131n kendili\u011finden a\u00e7\u0131lmas\u0131<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Taray\u0131c\u0131 ayarlar\u0131n\u0131n de\u011fi\u015fmesi<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u00fcrekli a\u00e7\u0131lan reklamlar ve y\u00f6nlendirmeler<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antivir\u00fcs yaz\u0131l\u0131m\u0131n\u0131n devre d\u0131\u015f\u0131 kalmas\u0131<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u015e\u00fcpheli dosya veya uygulamalar\u0131n ortaya \u00e7\u0131kmas\u0131<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bu t\u00fcr durumlarda sistemin g\u00fcvenlik yaz\u0131l\u0131mlar\u0131 ile taranmas\u0131 \u00f6nerilir.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131mlardan Korunma Yollar\u0131<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Dijital g\u00fcvenli\u011fi art\u0131rmak i\u00e7in \u015fu temel ad\u0131mlar izlenmelidir:<\/span><\/p>\n<ul>\n<li><b>G\u00fcncel Yaz\u0131l\u0131mlar:<\/b><span style=\"font-weight: 400;\"> \u0130\u015fletim sistemi ve t\u00fcm uygulamalar d\u00fczenli olarak g\u00fcncellenmelidir.<\/span><\/li>\n<li><b>G\u00fcvenilir Kaynaklar:<\/b><span style=\"font-weight: 400;\"> Yaz\u0131l\u0131m indirmeleri yaln\u0131zca resm\u00ee ve g\u00fcvenilir ma\u011fazalardan yap\u0131lmal\u0131d\u0131r.<\/span><\/li>\n<li><b>G\u00fc\u00e7l\u00fc Parolalar:<\/b><span style=\"font-weight: 400;\"> Her hesap i\u00e7in benzersiz ve karma\u015f\u0131k \u015fifreler kullanarak iki fakt\u00f6rl\u00fc do\u011frulama (2FA) aktif edilmelidir.<\/span><\/li>\n<li><b>Yedekleme:<\/b><span style=\"font-weight: 400;\"> Kritik veriler d\u00fczenli olarak harici bir diskte veya g\u00fcvenli bulut servislerinde yedeklenmelidir.<\/span><\/li>\n<li><b>Dikkatli Gezinme:<\/b><span style=\"font-weight: 400;\"> \u015e\u00fcpheli e-postalardaki ekleri a\u00e7maktan ve bilinmeyen ba\u011flant\u0131lara t\u0131klamaktan ka\u00e7\u0131n\u0131lmal\u0131d\u0131r.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131m (Malware) Hakk\u0131nda S\u0131k\u00e7a Sorulan Sorular (SSS)<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">Malware ve Vir\u00fcs Aras\u0131ndaki Fark Nedir?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Malware, t\u00fcm k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131 (vir\u00fcs, trojan, spyware vb.) kapsayan genel bir \u00e7at\u0131 terimdir. Vir\u00fcs ise bu geni\u015f ailenin sadece bir \u00fcyesidir ve temel \u00f6zelli\u011fi, bir dosyadan di\u011ferine tutunarak yay\u0131lmas\u0131d\u0131r.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u00dccretsiz Antivir\u00fcs Programlar\u0131 Zararl\u0131 Yaz\u0131l\u0131mlara Kar\u015f\u0131 Yeterli Koruma Sa\u011flar m\u0131?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u00dccretsiz yaz\u0131l\u0131mlar, temel ve bilinen tehditlere kar\u015f\u0131 ba\u015flang\u0131\u00e7 d\u00fczeyinde koruma sa\u011flar. Ancak yeni nesil karma\u015f\u0131k sald\u0131r\u0131lar, fidye yaz\u0131l\u0131mlar\u0131 ve geli\u015fmi\u015f kimlik av\u0131 korumas\u0131 i\u00e7in genellikle daha kapsaml\u0131 ara\u00e7lar sunan \u00fccretli g\u00fcvenlik paketleri tercih edilir.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Bilgisayar\u0131ma Zararl\u0131 Yaz\u0131l\u0131m Bula\u015ft\u0131\u011f\u0131n\u0131 Nas\u0131l Anlar\u0131m?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Aniden ortaya \u00e7\u0131kan sistem yava\u015flamalar\u0131, taray\u0131c\u0131da kontrol d\u0131\u015f\u0131 a\u00e7\u0131lan pencereler, depolama alan\u0131n\u0131n h\u0131zla t\u00fckenmesi ve g\u00fcvenlik duvar\u0131n\u0131n kendili\u011finden kapanmas\u0131 en yayg\u0131n belirtilerdir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bu t\u00fcr risklere kar\u015f\u0131 ald\u0131\u011f\u0131n \u00f6nlemleri Turknet <\/span><a href=\"https:\/\/www.turk.net\/gigafiber\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Gigafiber<\/span><\/a><span style=\"font-weight: 400;\">\u2019in sundu\u011fu y\u00fcksek h\u0131zl\u0131 ve stabil ba\u011flant\u0131 ile destekleyebilirsin. 1.0000 Mbps\u2019ye varan e\u015fit indirme ve y\u00fckleme h\u0131z\u0131i sayesinde g\u00fcvenlik g\u00fcncellemelerini an\u0131nda tamamlayabilir, bulut yedekleme i\u015flemlerini saniyeler i\u00e7inde ger\u00e7ekle\u015ftirerek dijital d\u00fcnyada daha g\u00fcvenli ve ak\u0131c\u0131 bir deneyim ya\u015fayabilirsin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sen de hemen bir <\/span><a href=\"https:\/\/www.turk.net\/hiz-testi\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">h\u0131z testi<\/span><\/a><span style=\"font-weight: 400;\"> yaparak mevcut ba\u011flant\u0131 performans\u0131n\u0131 \u00f6l\u00e7ebilir, ard\u0131ndan <\/span><a href=\"https:\/\/www.turk.net\/internet-hiz-altyapi-sorgulama\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">altyap\u0131 sorgulama<\/span><\/a><span style=\"font-weight: 400;\"> i\u015flemi yaparak adresinde Gigafiber olup olmad\u0131\u011f\u0131n\u0131 \u00f6\u011frenebilirsin. E\u011fer farkl\u0131 bir operat\u00f6r kullan\u0131yorsan, <\/span><a href=\"https:\/\/www.turk.net\/baska-operatorden-gecis\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">ba\u015fka operat\u00f6rden ge\u00e7i\u015f<\/span><\/a><span style=\"font-weight: 400;\"> avantajlar\u0131m\u0131z\u0131 de\u011ferlendirerek Turknetli olabilirsin.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zararl\u0131 yaz\u0131l\u0131mlar (malware), cihazlara izinsiz eri\u015fim sa\u011flamak, veri toplamak veya sistemlere zarar vermek amac\u0131yla geli\u015ftirilen yaz\u0131l\u0131m t\u00fcrleridir. G\u00fcn\u00fcm\u00fczde bireysel kullan\u0131c\u0131lar ve kurumlar i\u00e7in \u00f6nemli bir g\u00fcvenlik riski olu\u015fturan bu yaz\u0131l\u0131mlar, farkl\u0131 y\u00f6ntemlerle yay\u0131labilir ve \u00e7e\u015fitli ama\u00e7larla kullan\u0131labilir. Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? Zararl\u0131 yaz\u0131l\u0131m (malware), bilgisayar, ak\u0131ll\u0131 telefon veya a\u011f sistemlerine zarar vermek ya da yetkisiz [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":10660,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? T\u00fcrleri ve Korunma Yollar\u0131 - Turknet 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:\/\/www.turk.net\/blog\/zararli-yazilim-malware-nedir-turleri-ve-korunma-yollari\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? T\u00fcrleri ve Korunma Yollar\u0131 - Turknet Blog\" \/>\n<meta property=\"og:description\" content=\"Zararl\u0131 yaz\u0131l\u0131mlar (malware), cihazlara izinsiz eri\u015fim sa\u011flamak, veri toplamak veya sistemlere zarar vermek amac\u0131yla geli\u015ftirilen yaz\u0131l\u0131m t\u00fcrleridir. G\u00fcn\u00fcm\u00fczde bireysel kullan\u0131c\u0131lar ve kurumlar i\u00e7in \u00f6nemli bir g\u00fcvenlik riski olu\u015fturan bu yaz\u0131l\u0131mlar, farkl\u0131 y\u00f6ntemlerle yay\u0131labilir ve \u00e7e\u015fitli ama\u00e7larla kullan\u0131labilir. Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? 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