{"id":1721,"date":"2025-12-04T16:17:12","date_gmt":"2025-12-04T13:17:12","guid":{"rendered":"https:\/\/markahost.com.tr\/blog\/?p=1721"},"modified":"2025-12-04T16:17:12","modified_gmt":"2025-12-04T13:17:12","slug":"zararli-yazilim-nedir","status":"publish","type":"post","link":"https:\/\/markahost.com.tr\/blog\/zararli-yazilim-nedir\/","title":{"rendered":"Zararl\u0131 Yaz\u0131l\u0131m Nedir? Bilinen Zararl\u0131 Yaz\u0131l\u0131mlar Nelerdir?"},"content":{"rendered":"<h2><strong>Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131m (malware), bilgisayar, ak\u0131ll\u0131 telefon veya a\u011f altyap\u0131s\u0131 gibi dijital sistemlere izinsiz \u015fekilde s\u0131zmak, veri g\u00fcvenli\u011fini tehlikeye atmak, sistemi i\u015flevsiz h\u00e2le getirmek ya da kullan\u0131c\u0131ya zarar vermek amac\u0131yla olu\u015fturulan t\u00fcm k\u00f6t\u00fc niyetli yaz\u0131l\u0131mlar\u0131n genel ad\u0131d\u0131r. \u0130ngilizce \u201cmalicious software\u201d ifadesinden t\u00fcreyen malware kavram\u0131, vir\u00fcs, truva at\u0131, solucan, fidye yaz\u0131l\u0131m\u0131, casus yaz\u0131l\u0131m ve reklam yaz\u0131l\u0131m\u0131 gibi pek \u00e7ok farkl\u0131 alt t\u00fcr\u00fc kapsamaktad\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bu yaz\u0131l\u0131mlar \u00e7o\u011funlukla g\u00fcvenilir g\u00f6r\u00fcnen dosyalar\u0131n, programlar\u0131n veya ba\u011flant\u0131lar\u0131n i\u00e7ine gizlenerek sisteme s\u0131zar. \u00c7o\u011fu zaman arka planda sessizce \u00e7al\u0131\u015f\u0131r ve kullan\u0131c\u0131n\u0131n bilgisi d\u0131\u015f\u0131nda veri toplayabilir, sistem ayarlar\u0131n\u0131 de\u011fi\u015ftirebilir veya \u00e7e\u015fitli zarar verici i\u015flemler ger\u00e7ekle\u015ftirebilir. Malware\u2019in esas amac\u0131, sistem g\u00fcvenli\u011fini zay\u0131flatmak ve ele ge\u00e7irilen verileri k\u00f6t\u00fcye kullanmakt\u0131r.<\/span><\/p>\n<h2><strong>Zararl\u0131 Yaz\u0131l\u0131m Nas\u0131l \u00c7al\u0131\u015f\u0131r? Temel Ama\u00e7lar\u0131 Nelerdir?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">K\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar t\u00fcrlerine g\u00f6re farkl\u0131 \u00e7al\u0131\u015fma teknikleri kullansa da genel i\u015fleyi\u015f \u00fc\u00e7 ana a\u015famada toplanmaktad\u0131r. Sisteme bula\u015fma, gizlenme ve yay\u0131lma.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bula\u015fma a\u015famas\u0131, zararl\u0131 yaz\u0131l\u0131m\u0131n hedef cihaza giri\u015f yapt\u0131\u011f\u0131 s\u00fcre\u00e7tir. En s\u0131k kar\u015f\u0131la\u015f\u0131lan bula\u015fma y\u00f6ntemleri aras\u0131nda e-posta ekleri, zararl\u0131 internet siteleri, sahte yaz\u0131l\u0131m g\u00fcncellemeleri ve g\u00fcvenlik a\u00e7\u0131klar\u0131ndan yararlanma bulunur. \u00d6rne\u011fin kullan\u0131c\u0131, zararl\u0131 i\u00e7eri\u011fe sahip bir e-posta dosyas\u0131n\u0131 a\u00e7t\u0131\u011f\u0131nda veya g\u00fcvenilmeyen bir kaynaktan yaz\u0131l\u0131m indirdi\u011finde malware otomatik olarak sisteme yerle\u015febilir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gizlenme a\u015famas\u0131nda k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m, tespit edilmemek i\u00e7in \u00e7e\u015fitli saklanma stratejileri kullan\u0131r. Rootkit gibi geli\u015fmi\u015f gizleme teknikleri i\u015fletim sisteminin \u00e7ekirdek bile\u015fenlerine g\u00f6m\u00fclerek antivir\u00fcs yaz\u0131l\u0131mlar\u0131n\u0131n tehditleri g\u00f6rmesini zorla\u015ft\u0131r\u0131r. Baz\u0131 malware t\u00fcrleri, kendilerini sistem dosyas\u0131 gibi g\u00f6stererek ya da me\u015fru uygulamalar\u0131n i\u00e7ine entegre olarak fark edilmeden \u00e7al\u0131\u015fabilir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Yay\u0131lma a\u015famas\u0131 ise zararl\u0131 yaz\u0131l\u0131m\u0131n ba\u015fka cihazlara bula\u015fmak i\u00e7in ger\u00e7ekle\u015ftirdi\u011fi faaliyetleri i\u00e7erir. Yay\u0131lma, e-posta rehberindeki adreslere g\u00f6nderim yaparak, yerel a\u011fdaki g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 tarayarak veya USB gibi ta\u015f\u0131nabilir depolama birimlerine kendini kopyalayarak ger\u00e7ekle\u015febilir.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar\u0131n temel hedefi, cihazlara, a\u011flara veya veri yap\u0131lar\u0131na m\u00fcdahale ederek yetkisiz eri\u015fim sa\u011flamak, bilgi \u00e7almak, sistemi bozmak ya da maddi \u00e7\u0131kar elde etmektir. Bu nedenle finansal kazan\u00e7 sa\u011flama, sabotaj yapma, veri s\u0131zd\u0131rma, casusluk veya sistemi devre d\u0131\u015f\u0131 b\u0131rakma gibi k\u00f6t\u00fc niyetli ama\u00e7larla geli\u015ftirilir ve kullan\u0131l\u0131rlar.<\/span><\/p>\n<h2><strong>Zararl\u0131 Yaz\u0131l\u0131mlar\u0131n T\u00fcrleri Nelerdir?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">En \u00e7ok rastlanan zararl\u0131 yaz\u0131l\u0131m t\u00fcrlerini T\u00fcrkiye\u2019nin en g\u00fcvenilir <a href=\"https:\/\/markahost.com.tr\/web-hosting\"><strong>hosting<\/strong><\/a> sa\u011flay\u0131c\u0131lar\u0131ndan olan <a href=\"https:\/\/markahost.com.tr\/\"><strong>MarkaHost<\/strong><\/a> adresi olarak sizler i\u00e7in a\u015fa\u011f\u0131daki \u015fekilde s\u0131ralamaktay\u0131z.<\/span><\/p>\n<h3><strong>Vir\u00fcsler<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Vir\u00fcsler, zararl\u0131 yaz\u0131l\u0131m kategorisinin en eski ve en yayg\u0131n bilinen t\u00fcrlerinden biridir. Genellikle indirilen dosyalar\u0131n i\u00e7inde, e-posta eklerinde ya da g\u00fcvenilir olmayan internet sitelerine yap\u0131lan ziyaretler s\u0131ras\u0131nda sisteme s\u0131zarlar. \u00c7al\u0131\u015ft\u0131r\u0131ld\u0131klar\u0131nda mevcut programlar\u0131n yap\u0131s\u0131n\u0131 de\u011fi\u015ftirir, kendilerini \u00e7o\u011faltarak sistem i\u00e7inde yay\u0131l\u0131r ve daha sonra yaz\u0131l\u0131mlar\u0131na y\u00fcklenen g\u00f6revleri yerine getirirler.<\/span><\/p>\n<h3><strong>Truva At\u0131 (Trojan)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Truva atlar\u0131, zarars\u0131z veya faydal\u0131 g\u00f6r\u00fcnen bir uygulama gibi davranarak kullan\u0131c\u0131y\u0131 kand\u0131ran k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlard\u0131r. Kurulum ger\u00e7ekle\u015fti\u011fi anda aktif h\u00e2le gelir ve gizlice veri h\u0131rs\u0131zl\u0131\u011f\u0131 yapabilir, sistemi sabote edebilir, kullan\u0131c\u0131n\u0131n etkinliklerini izleyebilir veya sald\u0131rgan\u0131n ba\u015fka k\u00f6t\u00fc ama\u00e7l\u0131 i\u015flemler ba\u015flatmas\u0131na olanak sa\u011flayabilirler. G\u00f6r\u00fcn\u00fcrde normal bir program gibi \u00e7al\u0131\u015fmas\u0131 nedeniyle tespiti \u00e7o\u011fu zaman olduk\u00e7a zordur.<\/span><\/p>\n<h3><strong>Worm (Solucan)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Solucanlar, kullan\u0131c\u0131dan herhangi bir i\u015flem gerektirmeden kendilerini bir cihazdan di\u011ferine kopyalayabilen zararl\u0131 yaz\u0131l\u0131mlard\u0131r. \u00c7o\u011funlukla i\u015fletim sistemi veya yaz\u0131l\u0131mlardaki g\u00fcvenlik a\u00e7\u0131kl\u0131klar\u0131n\u0131 hedef almalar\u0131 nedeniyle a\u011f \u00fczerinden h\u0131zla \u00e7o\u011falabilir ve geni\u015f \u00e7apl\u0131 zararlara yol a\u00e7abilirler.<\/span><\/p>\n<h3><strong>Ransomware (Fidye Yaz\u0131l\u0131m\u0131)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Fidye yaz\u0131l\u0131mlar\u0131, siber su\u00e7lular i\u00e7in en \u00e7ok gelir sa\u011flayan zararl\u0131 yaz\u0131l\u0131m t\u00fcrlerinden biridir. Sisteme bula\u015ft\u0131ktan sonra cihazdaki verileri \u015fifreler ve kullan\u0131c\u0131ya bu verileri geri a\u00e7mak i\u00e7in fidye talebinde bulunur. \u00d6deme genellikle Bitcoin gibi takip edilmesi zor dijital para birimleriyle yap\u0131l\u0131r. Sonu\u00e7 olarak ransomware sald\u0131r\u0131lar\u0131 hem bireyleri hem de kurumlar\u0131 hedef alarak ciddi ekonomik kay\u0131plara yol a\u00e7abilmektedir.<\/span><\/p>\n<h3><strong>Spyware (Casus Yaz\u0131l\u0131m)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Casus yaz\u0131l\u0131mlar, kullan\u0131c\u0131n\u0131n bilgisi d\u0131\u015f\u0131nda cihaza y\u00fcklenen ve ki\u015fisel verileri, internet al\u0131\u015fkanl\u0131klar\u0131n\u0131 veya yap\u0131lan ileti\u015fimleri izleyerek \u00fc\u00e7\u00fcnc\u00fc ki\u015filere aktaran yaz\u0131l\u0131mlard\u0131r. Bu yaz\u0131l\u0131mlar, takip edilen cihaz \u00fczerindeki her t\u00fcrl\u00fc etkile\u015fimin g\u00f6zetlenmesine olanak tan\u0131r. G\u00fcvenlik kurumlar\u0131 veya ara\u015ft\u0131rma birimleri taraf\u0131ndan me\u015fru ama\u00e7larla kullan\u0131labildi\u011fi gibi, k\u00f6t\u00fc niyetli ki\u015filer taraf\u0131ndan ki\u015fileri gizlice izlemek i\u00e7in de k\u00f6t\u00fcye kullan\u0131labilmektedirler.<\/span><\/p>\n<h3><strong>Adware (Reklam Yaz\u0131l\u0131m\u0131)<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Reklam yaz\u0131l\u0131mlar\u0131, kullan\u0131c\u0131ya istenmeyen reklamlar g\u00f6stermek amac\u0131yla tasarlanm\u0131\u015f programlard\u0131r. \u00c7o\u011fu zaman \u00fccretsiz kullan\u0131m hakk\u0131 gibi bir avantaj kar\u015f\u0131l\u0131\u011f\u0131nda kurulur ve a\u00e7\u0131l\u0131r pencereler, yan\u0131p s\u00f6nen reklamlar gibi rahats\u0131z edici i\u00e7erik \u00fcretirler. Her ne kadar di\u011fer malware t\u00fcrleri kadar y\u0131k\u0131c\u0131 olmasa da kullan\u0131c\u0131 deneyimini olumsuz etkileyebilir ve baz\u0131 durumlarda veri toplama davran\u0131\u015flar\u0131 sergileyebilirler.<\/span><\/p>\n<h3><strong>Rootkit<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Rootkit\u2019ler, sald\u0131rganlara bir sistemde y\u00f6netici seviyesinde yetki sa\u011flayan geli\u015fmi\u015f gizlenme ara\u00e7lar\u0131d\u0131r. Sistem \u00e7ekirde\u011fine kadar yerle\u015ferek varl\u0131klar\u0131n\u0131 gizlemeye odaklanan Rootkit\u2019ler sayesinde sald\u0131rganlar, normalde yaln\u0131zca y\u00f6netici izinleriyle yap\u0131labilecek de\u011fi\u015fiklikleri fark edilmeden ger\u00e7ekle\u015ftirebilirler.<\/span><\/p>\n<h3><strong>Keylogger<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Keylogger yaz\u0131l\u0131mlar\u0131, kullan\u0131c\u0131lar\u0131n klavye arac\u0131l\u0131\u011f\u0131yla girdi\u011fi her tu\u015fun kayd\u0131n\u0131 tutar, b\u00f6ylece parolalar, e-posta adresleri, banka bilgileri ve di\u011fer hassas verilerini sald\u0131rganlara aktar\u0131rlar. Genellikle arka planda sessizce \u00e7al\u0131\u015f\u0131r ve tespit edilmesi olduk\u00e7a g\u00fc\u00e7 olan tu\u015f kaydediciler, sonu\u00e7 olarak kimlik h\u0131rs\u0131zl\u0131\u011f\u0131, finansal doland\u0131r\u0131c\u0131l\u0131k ve hesap ele ge\u00e7irme gibi ciddi g\u00fcvenlik tehditlerine yol a\u00e7arlar.<\/span><\/p>\n<h3><strong>Botnet ve Bot Yaz\u0131l\u0131mlar<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Botnet, tek ba\u015f\u0131na bir zararl\u0131 yaz\u0131l\u0131m t\u00fcr\u00fc de\u011fildir ve bot ad\u0131 verilen k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlarla ele ge\u00e7irilmi\u015f bilgisayarlardan olu\u015fan a\u011fd\u0131r. Sald\u0131rganlar, bu botlar\u0131 merkezi bir komuta sunucusu arac\u0131l\u0131\u011f\u0131yla kontrol ederek toplu sald\u0131r\u0131lar ger\u00e7ekle\u015ftirebilirler.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bot yaz\u0131l\u0131mlar\u0131 ise belirli g\u00f6revleri otomatik olarak yerine getirmek \u00fczere tasarlanm\u0131\u015f programlard\u0131r. Arama motorlar\u0131n\u0131n web sayfalar\u0131n\u0131 taramada kulland\u0131\u011f\u0131 me\u015fru botlar bulunsa da, k\u00f6t\u00fc niyetli botlar veri toplamak, spam g\u00f6ndermek veya sald\u0131r\u0131 ger\u00e7ekle\u015ftirmek amac\u0131yla da kullan\u0131labilir.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\"><strong>En \u00c7ok Bilinen Zararl\u0131 Yaz\u0131l\u0131m \u00d6rnekleri\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/strong> <\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Siber g\u00fcvenlik tarihinde b\u00fcy\u00fck etki yaratm\u0131\u015f en \u00e7ok bilinen zararl\u0131 yaz\u0131l\u0131mlar, milyonlarca kullan\u0131c\u0131y\u0131 etkileyerek \u00f6nemli maddi ve veri kay\u0131plar\u0131na yol a\u00e7m\u0131\u015ft\u0131r. \u0130nternet tarihi boyunca kar\u015f\u0131la\u015f\u0131lan en tehlikeli zararl\u0131 yaz\u0131l\u0131mlardan baz\u0131lar\u0131 a\u015fa\u011f\u0131dakilerdir:<\/span><\/p>\n<h3><strong>WannaCry<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">WannaCry, May\u0131s 2017&#8217;de d\u00fcnya \u00e7ap\u0131nda b\u00fcy\u00fck bir siber sald\u0131r\u0131 ba\u015flatan fidye yaz\u0131l\u0131m\u0131d\u0131r. Microsoft <a href=\"https:\/\/markahost.com.tr\/windows-hosting\" data-internallinksmanager029f6b8e52c=\"45\" title=\"windows hosting\">Windows<\/a> i\u015fletim sistemlerindeki g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 kullanarak h\u0131zla yay\u0131lan bu zararl\u0131 yaz\u0131l\u0131m, kullan\u0131c\u0131lar\u0131n dosyalar\u0131n\u0131 \u015fifreleyerek Bitcoin cinsinden fidye talep etmi\u015ftir. 150&#8217;den fazla \u00fclkede yakla\u015f\u0131k 200.000 bilgisayar\u0131 etkileyen sald\u0131r\u0131, hastaneler, bankalar ve b\u00fcy\u00fck \u015firketler de dahil olmak \u00fczere kritik altyap\u0131lara ciddi zarar vermi\u015ftir.<\/span><\/p>\n<h3><strong>Zeus Trojan<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Zeus (Zbot olarak da bilinir), 2007 y\u0131l\u0131nda ortaya \u00e7\u0131kan ve bankac\u0131l\u0131k bilgilerini \u00e7almak i\u00e7in tasarlanm\u0131\u015f karma\u015f\u0131k bir Truva at\u0131 yaz\u0131l\u0131m\u0131d\u0131r. Keylogger tekni\u011fini kullanarak kullan\u0131c\u0131lar\u0131n banka hesap bilgilerini, kredi kart\u0131 numaralar\u0131n\u0131 ve di\u011fer hassas verileri \u00e7alan Zeus, botnet a\u011flar\u0131 olu\u015fturarak binlerce bilgisayar\u0131 kontrol alt\u0131na alm\u0131\u015f ve milyonlarca dolarl\u0131k finansal kay\u0131plara neden olmu\u015ftur.<\/span><\/p>\n<h3><strong>CryptoLocker<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">2013 y\u0131l\u0131nda ortaya \u00e7\u0131kan CryptoLocker, modern fidye yaz\u0131l\u0131mlar\u0131n\u0131n \u00f6nc\u00fclerinden biri olarak kabul edilmektedir. Truva at\u0131 y\u00f6ntemiyle bilgisayarlara bula\u015fan bu zararl\u0131 yaz\u0131l\u0131m, kullan\u0131c\u0131lar\u0131n dosyalar\u0131n\u0131 g\u00fc\u00e7l\u00fc \u015fifreleme algoritmalar\u0131 ile kilitleyerek fidye talep etmi\u015ftir. E-posta ekleri ve k\u00f6t\u00fc ama\u00e7l\u0131 web siteleri arac\u0131l\u0131\u011f\u0131yla yay\u0131lan CryptoLocker, 2014 y\u0131l\u0131nda etkisiz hale getirilinceye kadar yakla\u015f\u0131k 500.000 bilgisayar\u0131 etkilemi\u015ftir.<\/span><\/p>\n<h3><strong>Stuxnet<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Stuxnet, 2010 y\u0131l\u0131nda ke\u015ffedilen ve siber sava\u015f kavram\u0131n\u0131 de\u011fi\u015ftiren son derece geli\u015fmi\u015f solucan yaz\u0131l\u0131m\u0131d\u0131r. End\u00fcstriyel kontrol sistemlerini hedef alan bu zararl\u0131 yaz\u0131l\u0131m, \u00f6zellikle \u0130ran&#8217;\u0131n n\u00fckleer tesislerindeki santrif\u00fcjleri sabote etmek i\u00e7in tasarlanm\u0131\u015ft\u0131r. Birden fazla zero-day g\u00fcvenlik a\u00e7\u0131\u011f\u0131n\u0131 kullanan Stuxnet, fiziksel ekipmanlar\u0131 hedef alan ilk bilinen siber silah olarak tarihe ge\u00e7mi\u015ftir.<\/span><\/p>\n<h3><strong>MyDoom<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">2004 y\u0131l\u0131nda ortaya \u00e7\u0131kan MyDoom, tarihin en h\u0131zl\u0131 yay\u0131lan e-posta solucanlar\u0131ndan biridir. Saatte y\u00fcz milyonlarca e-posta g\u00f6ndererek internet trafi\u011fini \u00f6nemli \u00f6l\u00e7\u00fcde yava\u015flatan bu zararl\u0131 yaz\u0131l\u0131m, DDoS sald\u0131r\u0131lar\u0131 i\u00e7in botnet a\u011flar\u0131 olu\u015fturmu\u015ftur. Ayr\u0131ca MyDoom, Microsoft ve SCO gibi b\u00fcy\u00fck teknoloji \u015firketlerinin web sitelerine y\u00f6nelik sald\u0131r\u0131lar d\u00fczenlemi\u015ftir.<\/span><\/p>\n<h3><strong>Emotet<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">\u0130lk olarak 2014 y\u0131l\u0131nda bankac\u0131l\u0131k Truva at\u0131 olarak ortaya \u00e7\u0131kan Emotet, zamanla \u00e7ok daha tehlikeli bir zararl\u0131 yaz\u0131l\u0131m platformuna d\u00f6n\u00fc\u015fm\u00fc\u015ft\u00fcr. Mod\u00fcler yap\u0131s\u0131 sayesinde s\u00fcrekli geli\u015fen Emotet, di\u011fer zararl\u0131 yaz\u0131l\u0131mlar\u0131 da\u011f\u0131tmak i\u00e7in bir altyap\u0131 g\u00f6revi g\u00f6rm\u00fc\u015ft\u00fcr. \u00d6zellikle kimlik av\u0131 e-postalar\u0131 arac\u0131l\u0131\u011f\u0131yla yay\u0131lan bu zararl\u0131 yaz\u0131l\u0131m, kurbanlar\u0131n e-posta listelerini \u00e7alarak daha inand\u0131r\u0131c\u0131 sald\u0131r\u0131lar d\u00fczenleyebilmi\u015ftir.<\/span><\/p>\n<h2><strong>Zararl\u0131 Yaz\u0131l\u0131m Sisteme Nas\u0131l Bula\u015f\u0131r?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlar, \u00e7o\u011fu zaman kullan\u0131c\u0131 herhangi bir tehdit oldu\u011funu fark etmeden sisteme s\u0131zar. En yayg\u0131n bula\u015fma yollar\u0131 aras\u0131nda \u015f\u00fcpheli e-posta ekleri veya mesajlar arac\u0131l\u0131\u011f\u0131yla g\u00f6nderilen dosyalar, g\u00fcvenli\u011fi zay\u0131f ya da sahte internet sitelerinden yap\u0131lan indirmeler ve korsan yaz\u0131l\u0131mlar\u0131n kullan\u0131m\u0131 yer al\u0131r. G\u00fcncellenmemi\u015f uygulamalar ve i\u015fletim sistemleri de sald\u0131rganlar\u0131n yararlanabilece\u011fi kritik g\u00fcvenlik a\u00e7\u0131klar\u0131 bar\u0131nd\u0131r\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Buna ek olarak, mobil cihazlarda sahte uygulamalar, gere\u011finden fazla izin talep eden yaz\u0131l\u0131mlar veya k\u00f6t\u00fc ama\u00e7l\u0131 APK dosyalar\u0131 arac\u0131l\u0131\u011f\u0131yla bula\u015fma g\u00f6r\u00fclebilir. Bilgisayarlarda ise k\u00f6t\u00fc ama\u00e7l\u0131 reklamlar, otomatik indirmeler veya g\u00fcvenli\u011fi zay\u0131f a\u011f ba\u011flant\u0131lar\u0131 \u00fczerinden zararl\u0131 yaz\u0131l\u0131mlar sisteme giri\u015f yapabilmektedir. Baz\u0131 malware t\u00fcrleri, kullan\u0131c\u0131n\u0131n hi\u00e7bir i\u015flem yapmas\u0131na gerek kalmadan sadece a\u011fdaki bir zafiyeti kullanarak bile yay\u0131labilmektedir.<\/span><\/p>\n<h2><strong>Zararl\u0131 Yaz\u0131l\u0131m Bula\u015ft\u0131\u011f\u0131n\u0131n Belirtileri Nelerdir?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Herhangi bir cihazda normal d\u0131\u015f\u0131 davran\u0131\u015flar g\u00f6zlemlendi\u011finde, bu durum \u00e7o\u011fu zaman zararl\u0131 yaz\u0131l\u0131m enfeksiyonunun habercisidir. A\u015fa\u011f\u0131daki belirtiler, sistemde malware olabilece\u011fine i\u015faret eden en yayg\u0131n g\u00f6stergelerdendir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cihaz\u0131n disk alan\u0131nda ani ve a\u00e7\u0131klanamayan azalmalar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bilgisayar\u0131n veya mobil cihaz\u0131n ola\u011fand\u0131\u015f\u0131 \u015fekilde yava\u015flamas\u0131.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mavi ekran (BSOD) gibi kritik sistem hatalar\u0131n\u0131n ortaya \u00e7\u0131kmas\u0131.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Uygulamalar\u0131n s\u0131k s\u0131k \u00e7\u00f6kmesi veya cihaz\u0131n donmas\u0131.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Taray\u0131c\u0131 ayarlar\u0131nda kendili\u011finden olu\u015fan de\u011fi\u015fiklikler ve farkl\u0131 sayfalara y\u00f6nlendirilme.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Arka planda nedeni belirsiz internet trafi\u011finde art\u0131\u015f.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antivir\u00fcs veya g\u00fcvenlik duvar\u0131 gibi koruma ara\u00e7lar\u0131n\u0131n devre d\u0131\u015f\u0131 b\u0131rak\u0131lmas\u0131.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dosya adlar\u0131nda, uzant\u0131lar\u0131nda veya boyutlar\u0131nda beklenmedik de\u011fi\u015fiklikler.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u00fcrekli beliren a\u00e7\u0131l\u0131r reklam pencereleri (pop-up\u2019lar).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Programlar\u0131n kullan\u0131c\u0131n\u0131n m\u00fcdahalesi olmadan a\u00e7\u0131lmas\u0131 veya kapanmas\u0131.<\/span><\/li>\n<\/ul>\n<h2><strong>Zararl\u0131 Yaz\u0131l\u0131mlardan Korunma Y\u00f6ntemleri<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131mlardan korunmak, tek bir uygulamayla de\u011fil, birden fazla g\u00fcvenlik ad\u0131m\u0131n\u0131n birlikte uygulanmas\u0131 ile m\u00fcmk\u00fcn olur. Hem bireysel kullan\u0131c\u0131lar hem de kurumlar, dijital g\u00fcvenliklerini art\u0131rmak i\u00e7in kapsaml\u0131 bir koruma stratejisi olu\u015fturmal\u0131d\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Antivir\u00fcs Yaz\u0131l\u0131m\u0131 Kullan\u0131n<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bilgisayarlar\u0131n\u0131z\u0131 ve ba\u011fl\u0131 oldu\u011funuz a\u011f sistemlerini malware tehditlerine kar\u015f\u0131 koruman\u0131n temel yolu g\u00fcvenilir bir antivir\u00fcs yaz\u0131l\u0131m\u0131 kullanmakt\u0131r. <a href=\"https:\/\/markahost.com.tr\/blog\/en-iyi-ucretsiz-antivirus-programlari\/\"><strong>Antivir\u00fcs programlar\u0131<\/strong><\/a>, zararl\u0131 dosyalar\u0131 tarar, potansiyel tehditleri karantinaya al\u0131r ve sisteme zarar vermeden etkisiz h\u00e2le getirir.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>E-posta Kullan\u0131rken Dikkatli Olun<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">E-posta, zararl\u0131 yaz\u0131l\u0131mlar\u0131n sisteme giri\u015f yapt\u0131\u011f\u0131 en yayg\u0131n kanallardan biridir. Tan\u0131mad\u0131\u011f\u0131n\u0131z g\u00f6ndericilerden gelen ekleri a\u00e7mamal\u0131, \u00f6zellikle de g\u00f6r\u00fcn\u00fc\u015fte <a href=\"https:\/\/markahost.com.tr\/kurumsal-hosting\" data-internallinksmanager029f6b8e52c=\"7\" title=\"kurumsal hosting\">kurumsal<\/a> olsa bile \u015f\u00fcpheli alan adlar\u0131na sahip e-posta adreslerine kar\u015f\u0131 temkinli davranmal\u0131s\u0131n\u0131z. Sahte faturalar, kargo bildirimleri veya resmi kurum mesajlar\u0131 gibi g\u00f6r\u00fcnen e-postalar \u00e7o\u011fu zaman k\u00f6t\u00fc ama\u00e7l\u0131 i\u00e7erik ta\u015f\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>G\u00fcvenlik Duvar\u0131 (Firewall) Kullan\u0131n<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A\u011f\u0131n\u0131z\u0131 yetkisiz eri\u015fime kar\u015f\u0131 korumak i\u00e7in y\u00f6nlendiricinizdeki veya i\u015fletim sistemi \u00fczerindeki g\u00fcvenlik duvar\u0131n\u0131 etkinle\u015ftirmelisiniz. G\u00fcvenlik duvarlar\u0131, gelen ve giden trafi\u011fi filtreleyerek sald\u0131rganlar\u0131n sisteme s\u0131zmas\u0131n\u0131 engeller ve zararl\u0131 yaz\u0131l\u0131m yay\u0131l\u0131m\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Antivir\u00fcs Yaz\u0131l\u0131m\u0131n\u0131 G\u00fcncel Tutun<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Antivir\u00fcs kullanmak tek ba\u015f\u0131na yeterli de\u011fildir. Yaz\u0131l\u0131m\u0131n d\u00fczenli olarak g\u00fcncellenmesi kritik bir gerekliliktir. Siber sald\u0131rganlar s\u00fcrekli yeni teknikler geli\u015ftirirken, g\u00fcvenlik \u015firketleri bu tehditlere kar\u015f\u0131 yamalar ve g\u00fcncellemeler yay\u0131mlar. G\u00fcncellemeleri ihmal etmek, bilinen zafiyetlere kar\u015f\u0131 sistemi savunmas\u0131z b\u0131rakabilir.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>A\u00e7\u0131l\u0131r Pencerelerden Uzak Durun<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ger\u00e7ekmi\u015f gibi g\u00f6r\u00fcnen reklam pencereleri veya a\u00e7\u0131l\u0131r bildirimler de zararl\u0131 yaz\u0131l\u0131mlar\u0131n sisteme s\u0131zmas\u0131nda s\u0131kl\u0131kla kullan\u0131lan y\u00f6ntemler aras\u0131ndad\u0131r. Bu t\u00fcr pop-up\u2019lara t\u0131klamak, k\u00f6t\u00fc ama\u00e7l\u0131 indirmeleri otomatik olarak ba\u015flatabilir veya sizi zararl\u0131 sitelere y\u00f6nlendirebilir. Taray\u0131c\u0131 ayarlar\u0131nda pop-up engelleme se\u00e7eneklerini aktif h\u00e2le getirmek bu riski azalt\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>G\u00fc\u00e7l\u00fc Parolalar Kullan\u0131n<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Hesap ve cihaz g\u00fcvenli\u011fi i\u00e7in karma\u015f\u0131k, tahmini zor parolalar tercih edilmelidir. B\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf, rakam ve \u00f6zel karakter i\u00e7eren parolalar daha dayan\u0131kl\u0131d\u0131r. Bununla birlikte, m\u00fcmk\u00fcn olan her yerde \u00e7ok fakt\u00f6rl\u00fc kimlik do\u011frulama (MFA) etkinle\u015ftirilmelidir. MFA, giri\u015f i\u015flemini birden fazla do\u011frulama ad\u0131m\u0131na ba\u011flayarak hesap g\u00fcvenli\u011fini b\u00fcy\u00fck \u00f6l\u00e7\u00fcde art\u0131r\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>\u015e\u00fcpheli Web Sitelerinden Ka\u00e7\u0131n\u0131n<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u0130nternet \u00fczerinde gezinirken \u015f\u00fcpheli sitelere girmek b\u00fcy\u00fck risk ta\u015f\u0131r. \u00d6zellikle \u00fccretsiz ekran koruyucular, crack dosyalar\u0131 veya bilinmeyen yaz\u0131l\u0131mlar sunan siteler zararl\u0131 i\u00e7erik bar\u0131nd\u0131rabilir. Dolay\u0131s\u0131yla g\u00fcvenilir olmayan kaynaklardan dosya indirmekten ka\u00e7\u0131nmak, bula\u015fma riskini ciddi \u00f6l\u00e7\u00fcde azalt\u0131r.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>D\u00fczenli Yedeklemeler Yap\u0131n<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Herhangi bir zararl\u0131 yaz\u0131l\u0131m sald\u0131r\u0131s\u0131 sonras\u0131nda veri kayb\u0131n\u0131 en aza indirmek i\u00e7in d\u00fczenli yedekleme kritik \u00f6neme sahiptir. Yedeklerin \u00e7evrimd\u0131\u015f\u0131 veya a\u011fdan izole bir konumda tutulmas\u0131, fidye yaz\u0131l\u0131mlar\u0131n\u0131n bu yedeklere eri\u015fmesini engeller. B\u00f6ylece bir sald\u0131r\u0131 sonras\u0131 verilerin g\u00fcncel h\u00e2line g\u00fcvenli \u015fekilde ula\u015f\u0131labilir.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Zararl\u0131 Yaz\u0131l\u0131m Temizleme ve Sistem Kurtarma Y\u00f6ntemleri<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131m tespit edildi\u011finde h\u0131zl\u0131, kontroll\u00fc ve sistematik m\u00fcdahale hem zarar\u0131 azalt\u0131r hem de yay\u0131lma riskini durdurur. A\u015fa\u011f\u0131da, enfekte olmu\u015f bir cihazdan k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131 temizlerken izlenmesi gereken temel ad\u0131mlar ayr\u0131nt\u0131l\u0131 \u015fekilde a\u00e7\u0131klanmaktad\u0131r.<\/span><\/p>\n<p><b>Ad\u0131m 1: Cihaz\u0131n \u0130nternet Ba\u011flant\u0131s\u0131n\u0131 Kesme<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Zararl\u0131 yaz\u0131l\u0131m bula\u015fm\u0131\u015f bir cihaz\u0131n a\u011f ba\u011flant\u0131s\u0131n\u0131n kesilmesi, yaz\u0131l\u0131m\u0131n komuta-kontrol (C2) sunucular\u0131yla ileti\u015fim kurmas\u0131n\u0131 engeller. B\u00f6ylece ek bile\u015fenlerin indirilmesinin, sald\u0131rganlara veri aktar\u0131lmas\u0131n\u0131n ve enfeksiyonun a\u011fdaki di\u011fer cihazlara yay\u0131lmas\u0131n\u0131n \u00f6n\u00fcne ge\u00e7ilmi\u015f olur. Bu nedenle Wi-Fi, Ethernet ve Bluetooth d\u00e2hil t\u00fcm ba\u011flant\u0131lar derhal devre d\u0131\u015f\u0131 b\u0131rak\u0131lmal\u0131d\u0131r.<\/span><\/p>\n<p><b>Ad\u0131m 2: G\u00fcvenli Modda Ba\u015flatma<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u0130nternet ba\u011flant\u0131s\u0131 kesildikten sonra cihaz\u0131n yaln\u0131zca temel s\u00fcr\u00fcc\u00fc ve hizmetlerle \u00e7al\u0131\u015ft\u0131\u011f\u0131 \u201cG\u00fcvenli Mod\u201dda ba\u015flat\u0131lmas\u0131 \u00f6nerilir. Bu ortam, bir\u00e7ok zararl\u0131 yaz\u0131l\u0131m\u0131n otomatik olarak \u00e7al\u0131\u015fmas\u0131n\u0131 engelleyerek tespit ve temizli\u011fi kolayla\u015ft\u0131r\u0131r. \u0130\u015fletim sistemine g\u00f6re G\u00fcvenli Mod\u2019a giri\u015f ad\u0131mlar\u0131 genellikle a\u015fa\u011f\u0131daki \u015fekildedir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Windows:<\/b><span style=\"font-weight: 400;\"> Cihaz a\u00e7\u0131l\u0131rken F8 tu\u015funa bas\u0131n ve men\u00fcden \u201cA\u011f ile G\u00fcvenli Mod\u201d se\u00e7ene\u011fini se\u00e7in.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>macOS:<\/b><span style=\"font-weight: 400;\"> Bilgisayar a\u00e7\u0131l\u0131r a\u00e7\u0131lmaz Shift tu\u015funa bas\u0131n ve oturum a\u00e7ma ekran\u0131 g\u00f6r\u00fcnene kadar bas\u0131l\u0131 tutun.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b><a href=\"https:\/\/markahost.com.tr\/linux-hosting\" data-internallinksmanager029f6b8e52c=\"5\" title=\"linux hosting\">Linux<\/a>:<\/b><span style=\"font-weight: 400;\"> \u00d6ny\u00fckleme s\u0131ras\u0131nda GRUB men\u00fcs\u00fcn\u00fc a\u00e7mak i\u00e7in Shift tu\u015funa bas\u0131n ve \u201cKurtarma Modu\u201dnu se\u00e7in.<\/span><\/li>\n<\/ul>\n<p><b>Ad\u0131m 3: K\u00f6t\u00fc Ama\u00e7l\u0131 Yaz\u0131l\u0131m Taramas\u0131 Yapma<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cihaz G\u00fcvenli Moddayken kapsaml\u0131 bir tarama ger\u00e7ekle\u015ftirmek, enfeksiyonun b\u00fcy\u00fck k\u0131sm\u0131n\u0131 tespit ve temizlemek i\u00e7in kritik \u00f6neme sahiptir. Tarama i\u00e7in iki y\u00f6ntem kullan\u0131labilir: i\u015fletim sisteminin yerle\u015fik g\u00fcvenlik ara\u00e7lar\u0131 veya \u00fc\u00e7\u00fcnc\u00fc taraf g\u00fcvenlik \u00e7\u00f6z\u00fcmleri.<\/span><\/p>\n<p><b>Yerle\u015fik Sistem G\u00fcvenlik Ara\u00e7lar\u0131n\u0131 Kullanma<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Modern i\u015fletim sistemleri, temel d\u00fczeyde k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m alg\u0131layan ve kald\u0131ran yerle\u015fik ara\u00e7lara sahiptir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Windows:<\/b><span style=\"font-weight: 400;\"> Windows Defender, bilinen tehditleri tarayabilen ve kald\u0131rabilen entegre antivir\u00fcs motorudur.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>macOS:<\/b><span style=\"font-weight: 400;\"> XProtect, i\u015faretlenen tehditleri otomatik olarak tespit eder; ancak manuel tarama ya da geni\u015f kapsaml\u0131 temizleme \u00f6zellikleri s\u0131n\u0131rl\u0131d\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Linux:<\/b><span style=\"font-weight: 400;\"> \u00c7o\u011fu da\u011f\u0131t\u0131mda yerle\u015fik antivir\u00fcs bulunmasa da, a\u00e7\u0131k kaynakl\u0131 ClamAV yayg\u0131n olarak kullan\u0131lan bir se\u00e7enektir.<\/span><\/li>\n<\/ul>\n<p><b>\u00dc\u00e7\u00fcnc\u00fc Taraf Antivir\u00fcs ve Anti-Malware Ara\u00e7lar\u0131<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Daha kapsaml\u0131 temizlik ve geli\u015fmi\u015f tarama \u00f6zellikleri i\u00e7in \u00fc\u00e7\u00fcnc\u00fc taraf g\u00fcvenlik yaz\u0131l\u0131mlar\u0131 tercih edilebilir. Yap\u0131lmas\u0131 gerekenler:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">G\u00fcvenilir bir \u00fcr\u00fcn se\u00e7mek<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Yaz\u0131l\u0131m\u0131 indirip kurmak<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">En g\u00fcncel tehdit veri taban\u0131na sahip oldu\u011fundan emin olmak<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tam sistem taramas\u0131 ba\u015flatmak<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bu ara\u00e7lar genellikle k\u00f6klenmi\u015f tehditleri ve daha karma\u015f\u0131k sald\u0131r\u0131 bile\u015fenlerini tespit etmede daha ba\u015far\u0131l\u0131d\u0131r.<\/span><\/p>\n<p><b>Ad\u0131m 4: Kalan Enfeksiyonlar\u0131n Manuel Olarak Temizlenmesi<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Baz\u0131 zararl\u0131 yaz\u0131l\u0131m t\u00fcrleri, otomatik taramalardan sonra bile sistemde kal\u0131nt\u0131 b\u0131rakabilir. Manuel temizlik a\u015fa\u011f\u0131daki \u015fekildedir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">K\u00f6t\u00fc ama\u00e7l\u0131 dosya ve klas\u00f6rleri silme<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Windows kay\u0131t defterindeki zararl\u0131 girdileri kald\u0131rma<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Taray\u0131c\u0131 ayarlar\u0131n\u0131 s\u0131f\u0131rlama ve istenmeyen eklentileri silme<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sistem yap\u0131land\u0131rmalar\u0131n\u0131 varsay\u0131lan durumuna d\u00f6nd\u00fcrme<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bu i\u015flemlerin y\u00fcksek teknik bilgi gerektirmesi nedeniyle, yap\u0131lan hatal\u0131 bir i\u015flem sistem karars\u0131zl\u0131\u011f\u0131na veya veri kayb\u0131na yol a\u00e7abilece\u011finden manuel m\u00fcdahale sadece konuya hakim ki\u015filerce yap\u0131lmal\u0131d\u0131r. Dolay\u0131s\u0131yla emin olunmad\u0131\u011f\u0131nda profesyonel bir BT uzman\u0131ndan destek al\u0131nmal\u0131d\u0131r.<\/span><\/p>\n<p><b>Ad\u0131m 5: Yaz\u0131l\u0131m G\u00fcncellemeleri ve G\u00fcvenlik Ayarlar\u0131 Uygulama<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Temizlik tamamland\u0131ktan sonra i\u015fletim sistemi, web taray\u0131c\u0131lar\u0131, eklentiler ve t\u00fcm y\u00fckl\u00fc yaz\u0131l\u0131mlar\u0131n g\u00fcncellenmesi kritik \u00f6nem ta\u015f\u0131r. G\u00fcvenlik ayarlar\u0131, sald\u0131rganlar\u0131n k\u00f6t\u00fcye kullanabilece\u011fi a\u00e7\u0131klar\u0131 kapat\u0131r ve gelecekteki enfeksiyon riskini \u00f6nemli \u00f6l\u00e7\u00fcde azalt\u0131r. Bu nedenle sistem bile\u015fenlerinin d\u00fczenli olarak g\u00fcncel tutulmas\u0131, uzun vadeli korunman\u0131n temel ad\u0131mlar\u0131ndan biridir.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zararl\u0131 Yaz\u0131l\u0131m (Malware) Nedir? Zararl\u0131 yaz\u0131l\u0131m (malware), bilgisayar, ak\u0131ll\u0131 telefon veya a\u011f altyap\u0131s\u0131 gibi dijital sistemlere izinsiz \u015fekilde s\u0131zmak, veri<\/p>\n","protected":false},"author":2,"featured_media":1722,"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-1721","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\/1721","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=1721"}],"version-history":[{"count":1,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/1721\/revisions"}],"predecessor-version":[{"id":1723,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/1721\/revisions\/1723"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media\/1722"}],"wp:attachment":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=1721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=1721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=1721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}