{"id":3356,"date":"2022-03-30T11:24:06","date_gmt":"2022-03-30T08:24:06","guid":{"rendered":"https:\/\/kutaybilen.com.tr\/?p=3356"},"modified":"2022-03-30T11:24:06","modified_gmt":"2022-03-30T08:24:06","slug":"wannacry-hala-milyonlarca-bilgisayari-tehdit-ediyor","status":"publish","type":"post","link":"https:\/\/kutaybilen.com.tr\/?p=3356","title":{"rendered":"WannaCry, Hala Milyonlarca Bilgisayar\u0131 Tehdit Ediyor"},"content":{"rendered":"<p>2017 y\u0131l\u0131n\u0131n May\u0131s ay\u0131nda t\u00fcm d\u00fcnya b\u00fcy\u00fck\u00a0bir taarruzla kar\u015f\u0131 kar\u015f\u0131ya kald\u0131. WannaCry olarak bilinen bir makus maksatl\u0131 yaz\u0131l\u0131m ile\u00a0pek \u00e7ok bilgisayar ele ge\u00e7irildi, veriler\u00a0\u00e7al\u0131nd\u0131\u00a0ve 300 dolar kar\u015f\u0131l\u0131\u011f\u0131ndaki Bitcoin&#39;in belirlenen c\u00fczdana g\u00f6nderilmesi istendi. 150&#39;den fazla \u00fclkede y\u00fcz binlerce bilgisayar bu h\u00fccumdan nasibini ald\u0131. Baz\u0131lar\u0131 fidye \u00f6demeyi kabul ederken baz\u0131lar\u0131 ise datalar\u0131n\u0131 kurtaramad\u0131. B\u00f6ylesi bir durum\u00a0ilk defa ya\u015fanm\u0131\u015ft\u0131 ve t\u00fcm d\u00fcnyada b\u00fcy\u00fck bir tesir g\u00f6stermi\u015fti. Durum o kadar ciddiydi ki kimi h\u00fck\u00fcmet sistemleri, ula\u015f\u0131m firmalar\u0131na ili\u015fkin sistemler ve \u00f6zel \u015firketler WannaCry sald\u0131r\u0131s\u0131na maruz kalm\u0131\u015ft\u0131. Pekala neydi bu WannaCry? Nas\u0131l ortaya \u00e7\u0131km\u0131\u015ft\u0131 ve bug\u00fcn hala risk alt\u0131nda m\u0131y\u0131z?<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.webtekno.com\/images\/editor\/default\/0002\/02\/62577dbdf19cc204e748e4ed129e5678a53973b3.jpeg\"\/><\/p>\n<p>WannaCry, Windows i\u015fletim sistemlerini etkiliyordu. Bir bi\u00e7imde bilgisayarlara s\u0131zarak kullan\u0131c\u0131n\u0131n denetiminde hi\u00e7bir \u015fey yapt\u0131rm\u0131yordu. Bundan kurtulman\u0131n tek derman\u0131 de istenilen fidyeyi bilgisayar korsanlar\u0131na vermekti. Hala kim olduklar\u0131 bilinmeyen bilgisayar korsanlar\u0131, bu sald\u0131r\u0131da\u00a0Amerika&#39;n\u0131n Ulusal G\u00fcvenlik Ajans\u0131 taraf\u0131ndan olu\u015fturulmu\u015f olan EternalBlue ve DoublePulsar&#39;a\u00a0g\u00fcveniyorlard\u0131. Bu ara\u00e7lar sayesinde Windows i\u015fletim sistemlerine \u00e7ar\u00e7abuk s\u0131z\u0131labiliyor ve a\u011f \u00fczerindeki t\u00fcm bilgisayarlara yay\u0131labiliyordu. G\u00fcvenlik uzmanlar\u0131 WannaCry&#39;\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 k\u0131sa m\u00fcddette \u00e7\u00f6zm\u00fc\u015flerdi. Windows i\u015fletim sistemlerinde bulunan SMB protokol\u00fc (bu protokol kullan\u0131larak muhakkak portlar \u00fczerinden\u00a0dosyalara eri\u015filebiliyor)\u00a0arac\u0131l\u0131\u011f\u0131yla sistemlerde bulunan bilgisayarlara ula\u015fan WannaCry, s\u00fcratli bir formda yay\u0131l\u0131yordu.\u00a0<\/p>\n<p>WannaCry sald\u0131r\u0131s\u0131 \u015f\u00f6yle ger\u00e7ekle\u015fti; evvel DoublePulsar kullan\u0131ld\u0131 ve b\u00f6ylelikle i\u015fletim sistemlerinde art kap\u0131lar a\u00e7\u0131ld\u0131, \u00e7abucak akabinde da EternalBlue a\u00e7\u0131\u011f\u0131 kullan\u0131larak sistemlere s\u00fcratli bir halde eri\u015fildi. Sonras\u0131nda da kullan\u0131c\u0131lara bir aray\u00fcz g\u00f6sterildi. Bu aray\u00fczde de ne yapmas\u0131 gerekti\u011fine dair bilgilendirmeler yap\u0131ld\u0131.<\/p>\n<p>Microsoft asl\u0131nda bu stil bir ak\u0131n\u0131n fark\u0131ndayd\u0131, i\u015fletim sistemlerindeki a\u00e7\u0131\u011f\u0131 biliyordu. Bunun i\u00e7in bir g\u00fcvenlik yamas\u0131 yay\u0131nland\u0131. Lakin ferdi kullan\u0131c\u0131lar ve \u015firketler, bu g\u00fcvenlik yamas\u0131n\u0131 sistemlerine kurmak i\u00e7in ge\u00e7 kalm\u0131\u015flard\u0131. Yaln\u0131zca birka\u00e7 saat i\u00e7erisinde WannaCry, bilgisayar korsanlar\u0131n\u0131n bile beklemedi\u011fi bir formda yay\u0131ld\u0131. Belirlenen Bitcoin c\u00fczdan\u0131na milyarlarca dolar pahas\u0131nda Bitcoin g\u00f6nderildi. Akabinde taarruzlar kesildi. Ya da en az\u0131ndan kesildi\u011fi d\u00fc\u015f\u00fcnd\u00fcr\u00fclmek istendi.<\/p>\n<p>Ortadan 1 ay ge\u00e7tikten sonra ikinci bir taarruz geldi. Ama\u00e7 bu sefer reklam \u015firketleri, b\u00fcy\u00fck nakliye firmalar\u0131 ve \u00fcst\u00fcn market zincirlerine ili\u015fkin internet siteleriydi. Bilgisayar korsanlar\u0131 ikinci kere b\u00fcy\u00fck bir vurgun daha yapm\u0131\u015flard\u0131. Birincisi kadar olmasa da ikinci atakta bilgisayar korsanlar\u0131 taraf\u0131ndan ba\u015far\u0131l\u0131 olmu\u015ftu.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.webtekno.com\/images\/editor\/default\/0002\/02\/16d4061a7e84978bf0c0cdac11ed6d101d524961.jpeg\"\/><\/p>\n<p>Pekala o periyot ne oldu? derseniz, istihbarat servisleri su\u00e7land\u0131. H\u00fck\u00fcmetler a\u011f\u0131r tenkit ya\u011fmuruna tutuldular. Pek \u00e7ok sistem \u00e7\u00f6kt\u00fc ve bu sistemlerin tekrardan kullan\u0131labilmesi i\u00e7in gereken fidyeler, bilgisayar korsanlar\u0131na \u00f6dendi.\u00a0<\/p>\n<p><b>\u015eu an ne kadar inan\u00e7tay\u0131z?\u00a0<\/b><\/p>\n<p>Ortaya \u00e7\u0131kan bilgilere nazaran hala inan\u00e7ta de\u011filiz. \u015eu an i\u00e7in bilhassa de i\u015fletim sistemlerinin en \u015fimdiki s\u00fcr\u00fcm\u00fcne sahip olmayan kullan\u0131c\u0131lar WannaCry tehdidiyle kar\u015f\u0131 kar\u015f\u0131yalar. 1.7 milyon bilgisayar her an WannaCry sald\u0131r\u0131s\u0131na maruz kalabilir. Yapmam\u0131z gereken \u015feye gelecek olursak;\u00a0Microsoft i\u015fletim sistemlerini orjinal kullanmak ve bilgisayarlar\u0131m\u0131z\u0131 \u015fimdiki tutmak gerekiyor. Fakat elbette bu \u00fczere tedbirler internet ortam\u0131nda tam olarak k\u00e2fi olmayabilir. WannaCry ve sonradan \u00e7\u0131kan pek \u00e7ok vir\u00fcsten korunmak i\u00e7in m\u00fcmk\u00fcn oldu\u011funca g\u00fcvenilmeyen sitelerden de uzak kalmak\u00a0gerekiyor.<\/p>\n<div> <\/div>\n<div>\n<div> <\/div>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>2017 y\u0131l\u0131n\u0131n May\u0131s ay\u0131nda t\u00fcm d\u00fcnya b\u00fcy\u00fck\u00a0bir taarruzla kar\u015f\u0131 kar\u015f\u0131ya kald\u0131. WannaCry olarak bilinen bir makus maksatl\u0131 yaz\u0131l\u0131m ile\u00a0pek \u00e7ok &#8230;<\/p>\n","protected":false},"author":1,"featured_media":3357,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[854],"tags":[1007,1104,1035],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/3356"}],"collection":[{"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3356"}],"version-history":[{"count":1,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/3356\/revisions"}],"predecessor-version":[{"id":3358,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/posts\/3356\/revisions\/3358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=\/wp\/v2\/media\/3357"}],"wp:attachment":[{"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kutaybilen.com.tr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}