{"id":13068,"date":"2015-11-10T10:13:52","date_gmt":"2015-11-10T10:13:52","guid":{"rendered":"http:\/\/atif.unaldi.org\/blog\/?p=13068"},"modified":"2015-11-10T10:13:52","modified_gmt":"2015-11-10T10:13:52","slug":"turkiyede-siber-guvenlik-ne-noktada","status":"publish","type":"post","link":"http:\/\/atif.unaldi.org\/blog\/2015\/11\/10\/turkiyede-siber-guvenlik-ne-noktada\/","title":{"rendered":"Bir hacker i\u00e7in T\u00fcrkiye'de g\u00fcvenlik ne noktada?"},"content":{"rendered":"

\"hacker\"<\/a>Belli aral\u0131klarla sitemde baz\u0131 fikirlerine de\u011fer verdi\u011fim ki\u015filerin yaz\u0131lar\u0131n\u0131 payla\u015f\u0131yorum.
\nErhen Yaz\u0131c\u0131 ge\u00e7en g\u00fcn a\u015fa\u011f\u0131daki yaz\u0131y\u0131 facebook ortam\u0131nda payla\u015fm\u0131\u015ft\u0131. Onun da izni ile yaz\u0131y\u0131 siz okurlar\u0131mla payla\u015fmay\u0131 uygun g\u00f6rd\u00fcm.
\nBu arada k\u00fc\u00e7\u00fck bir bilgi Erhan Yaz\u0131c\u0131 Kiral\u0131k Hacker A.\u015e.’nin sahibi bir g\u00fcvenlik uzman\u0131.
\n”
\nHGS \/ OGS \/ KGS sisteminde ke\u015ffetti\u011fim bir zafiyeti exploit ederek, bir plakaya ait kimlik ve ileti\u015fim bilgisi, hangi gi\u015felerden ne zaman ge\u00e7ti\u011fi, bir ki\u015fiye ait ara\u00e7lar vs gibi devletin arac\u0131n\u0131zla alakal\u0131 toplad\u0131\u011f\u0131 t\u00fcm data’ya d\u0131\u015far\u0131dan yetkisiz \u015fekilde de eri\u015filebiliyor. Yakla\u015f\u0131k 10 milyon ara\u00e7 ve sahip bilgisi mecvut.
\nSigorta Birli\u011fi Merkezi’nin sisteminde de benzer \u015fekilde g\u00fcvenlik a\u00e7\u0131klar\u0131 var. Ge\u00e7mi\u015f y\u0131llar dahil, her araca yap\u0131lan her kasko ve sigorta poli\u00e7esine, yine ki\u015fisel bilgiler dahil olarak eri\u015filebiliyor. Burada da yakla\u015f\u0131k 55 milyon kay\u0131t vard\u0131. 6 ay kadar \u00f6nce farketti\u011fim bir zafiyetti, hala aktif.
\nBu iki veritaban\u0131 birle\u015ftirildi\u011fi zaman ortaya de\u011ferli bir data \u00e7\u0131k\u0131yor. K\u00f6t\u00fcye kullan\u0131ma \u00e7ok m\u00fcsait, \u00f6te yandan devlet benim \u00f6zel bilgilerimi koruyam\u0131yor d\u00fc\u015f\u00fcncesi..
\n\u00d6n\u00fcm\u00fczdeki ay Silikon Vadisine gidiyorum diye elimde devletle alakal\u0131 -herkesi ilgilendiren- ne varsa payla\u015f\u0131y\u0131m anca fixlenir diye d\u00fc\u015f\u00fcn\u00fcp gerekli yerlere haber verdim. Bakanl\u0131ktan PTT’den Karayollar\u0131ndan vs arad\u0131lar 8-10 g\u00f6r\u00fc\u015fme yapt\u0131m. Sonucunda ilerleyip geldi\u011fimiz nokta \u015fu; “\u015euan sistem \u00f6n\u00fcmde a\u00e7\u0131k ve bu kapal\u0131 devre bi sistem, nereden giriyosunuz beraber yapal\u0131m, nereye t\u0131klamam gerekiyor” vs vs smile ifade simgesi<\/u><\/i> Sayfada bir ‘Hackle’ butonu olaca\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcyor adam. Bu g\u00f6r\u00fc\u015ft\u00fc\u011f\u00fcm ki\u015filerin birka\u00e7 tanesi yetkili di\u011ferleri teknik \u00e7al\u0131\u015fanlar \u00fcstelik.
\nYaz\u0131l\u0131 gelen bilgilendirmelerde de benzer bi durum var, kim login olursa o ki\u015finin bilgileri g\u00f6r\u00fcl\u00fcr, di\u011ferleri g\u00f6r\u00fclmez demi\u015fler smile ifade simgesi<\/u><\/i> Normalde olmas\u0131 gereken bu zaten, hack dedi\u011fimiz \u015fey zaten normalde olmamas\u0131 gereken \u015feylerin yap\u0131labiliyor olmas\u0131 de\u011fil mi ? Zafiyetin ne oldu\u011funu nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 b\u0131rak\u0131n daha konuyu anlayam\u0131yorlar diye toplant\u0131 ayarlay\u0131n demo yap\u0131y\u0131m g\u00f6steriyim dedim. 2 hafta kadar \u00f6nceydi bu, d\u00fcn yaz\u0131l\u0131 olarak yine benzer c\u00fcmleler geldi..
\nDaha \u00f6nce de b\u00f6yle bi tecrubem olmu\u015ftu u\u011fra\u015fmay\u0131p ne haliniz varsa g\u00f6r\u00fcn demi\u015ftim. 2 sene kadar \u00f6nceydi Tubitak Bilgem ba\u015fkan\u0131yla g\u00f6r\u00fc\u015fmem vard\u0131. Toplant\u0131 aras\u0131 yine devlet sistemleriyle alakal\u0131 zafiyetlerden bahsetmi\u015ftim \u00f6rnekler vermi\u015ftim, o d\u00f6nem iski’de ibb de vs at ko\u015fturuyordum, e-devlette yine kritik a\u00e7\u0131klar vard\u0131. ‘Bu a\u00e7\u0131klar\u0131 kurumlar\u0131n kendileriyle payla\u015f\u0131p o \u015fekilde ilerlemeniz daha do\u011fru olur’ demi\u015fti, ben de eyvallah \u00e7ok da umrumda demi\u015ftim. Zaten \u015fu aralar kurumlar\u0131n kendileriyle payla\u015f\u0131nca da nas\u0131l “ilerlendi\u011fini” g\u00f6rd\u00fcm smile ifade simgesi<\/u><\/i>
\nHakikaten \u00fcz\u00fcl\u00fcyorum, devlet memuru zihniyetini heryerde g\u00f6rebiliyorsunuz, kimse sorumluluk alm\u0131yor kimsenin umurunda de\u011fil, sizin umrunuzda de\u011filse benim (ya da varsa bu a\u00e7\u0131klar\u0131 bulabilen di\u011fer hackerlar\u0131n) hi\u00e7 umrunda de\u011fil, hi\u00e7bir zaman da olmaz. Bakanl\u0131klar\u0131n da m\u0131 \u00f6zelle\u015fmesi laz\u0131m kurumsal kalite i\u00e7in ya da bu garanti sistem (kadro) bu kadar garanti olmamal\u0131 m\u0131 ? Ne yapmam\u0131z laz\u0131m yani b\u00fcy\u00fck bir skandal olmadan \u00f6nce uyar\u0131yorum, herhangi bir \u00fccret istemedi\u011fimi s\u00f6yl\u00fcyorum tek derdim bu a\u00e7\u0131klar\u0131n kapat\u0131lmas\u0131 ve kendi bilgilerim dahil herkesin ki\u015fisel bilgilerinin g\u00fcvende olmas\u0131. Daha ge\u00e7en haftalarda Tatil Sepeti ‘nde buldu\u011fum bir a\u00e7\u0131\u011f\u0131n demosunu yap\u0131p g\u00f6stermi\u015ftim, 3 – 5 g\u00fcn i\u00e7erisinde a\u00e7\u0131\u011f\u0131 bulup kapatt\u0131klar\u0131 halde te\u015fekk\u00fcr ettiler \u00f6deme yapmak istediler ve bundan sonras\u0131 i\u00e7in d\u00fczenli dan\u0131\u015fmanl\u0131k istediler. Direkt devlet ve \u00f6zel sekt\u00f6r fark\u0131 gibi anla\u015f\u0131lmas\u0131n, \u00f6zel sekt\u00f6rde de \u00e7ok vahim \u00f6rnekler verebilirim en az 10 tane.
\nBir de \u00f6nemli bi detay; devlet taraf\u0131ndaki \u00e7o\u011fu zafiyet fixlendikten sonra dahi kullan\u0131labilecek zafiyetler. Yine \u00f6zel sekt\u00f6rden bir \u00f6rnek veriyim 3 ay kadar \u00f6nce \u00c7al\u0131k’\u0131n bankas\u0131nda bi a\u00e7\u0131k farketmi\u015ftim, 1.5 milyona yak\u0131n m\u00fc\u015fterinin hesaplar\u0131ndaki toplam bakiyeyi farkl\u0131 bir hesaba aktarabiliyordum ya da bunun gibi 5 6 felaket senaryosu daha vard\u0131, bir \u00e7ok \u015fey yap\u0131labiliyordu t\u00fcm hesaplar \u00fczerinde. Haber verdim kapatal\u0131m dedim toplant\u0131da kendi verdikleri bi hesaptan kendi verdikleri di\u011fer hesaba 25TL aktararak yap\u0131labildi\u011fini g\u00f6sterdim. 4 g\u00fcn kadar sonra a\u00e7\u0131\u011f\u0131 kapatt\u0131lar ve bir daha ne arad\u0131lar ne sordular ne de bi te\u015fekk\u00fcr ettiler smile ifade simgesi<\/u><\/i> Muhtemelen okuyolard\u0131r, i\u015fte benim \u00f6rne\u011fimdeki o vizyonsuz ve ayn\u0131 zamanda iyi niyetli olmayan holding y\u00f6neticileri sizsiniz smile ifade simgesi<\/u><\/i> Di\u011fer taraftan Ko\u00e7’un bankas\u0131ndaki bir zafiyetten \u00f6t\u00fcr\u00fc 550.000 adet kredi kart\u0131 bilgisine eri\u015filebiliyordu.
\n\u0130\u015fte internet bankac\u0131l\u0131\u011f\u0131 gibi sistemlerde a\u00e7\u0131\u011f\u0131 kapatt\u0131klar\u0131 zaman daha m\u00fcdahele edemezsiniz, ama as\u0131l zafiyetin datan\u0131n kendisi oldu\u011fu yerde -mesela kredi kart\u0131 bilgisi gibi- o a\u00e7\u0131k kapand\u0131ktan sonra art\u0131k kart bilgilerine sistemdeki a\u00e7\u0131k \u00fczerinden eri\u015filemese dahi bi kere o data \u00e7ekilmi\u015ftir, i\u015f i\u015ften ge\u00e7mi\u015ftir. Devlet taraf\u0131ndaki a\u00e7\u0131klar da genelde hep bu \u015fekilde, o y\u00fczden birileri bu datalar\u0131 \u00e7ekip k\u00f6t\u00fc ama\u00e7la kullanmadan \u00f6nce acilen kapat\u0131lmalar\u0131 gerekiyor.
\nNormalde sosyal medyada \u015fahs\u0131 fikirlerimi monolog \u015feklinde yazmamaya \u00e7al\u0131\u015f\u0131yorum, birilerinin okumas\u0131n\u0131 istedi\u011fim kadar ba\u015fka birilerinin de okumamas\u0131 gereken \u015feyler bunlar, hem tercih hem de gizlilik s\u00f6zle\u015fmeleri, ama bu seferlik birka\u00e7 bi\u015fey yazmak istedim, \u00f6rnekler havada kalmas\u0131n diye firma isimlerini de verdim. Yoksa hakikaten birka\u00e7 c\u00fcmle yaz\u0131cakt\u0131m devlet ve siber g\u00fcvenlikle alakal\u0131 ama bi konu di\u011ferini \u00e7a\u011f\u0131rd\u0131 yaz\u0131 baya uzad\u0131 do\u011fa\u00e7lama olarak. Normalde zaten s\u00f6ylemek istedi\u011fim \u015feyleri bi kitapta topluyorum burada 10 sayfa daha yazsam yine anlam\u0131 yok. \u00d6zet fikrim; T\u00fcrkiye’de bilgi g\u00fcvenli\u011fi bilinci maalesef vahim durumda. Eskiden d\u00f6ve d\u00f6ve adam etme y\u00f6ntemini benimsiyodum art\u0131k anlata anlata adam etmeye \u00e7al\u0131\u015f\u0131yorum son 2 y\u0131ld\u0131r smile ifade simgesi<\/u><\/i> \u0130\u015f ba\u015fa gelmeden gelmi\u015f gibi hareket edip aksiyon almak laz\u0131m. \u00d6zellikle \u015firketler i\u00e7in s\u00f6yl\u00fcyorum \u015firket i\u00e7i bilgi g\u00fcvenli\u011fine verdi\u011finiz \u00f6nemin de\u011feri kadar b\u00fcy\u00fcks\u00fcn\u00fcz. Baz\u0131 \u015firketlerde y\u00f6netimin oldu\u011fu binaya cep telefonuyla dahi giremiyorsunuz, bir\u00e7ok g\u00fcvenlikten turnikeden ge\u00e7iyosunuz size i\u00e7eride s\u00fcrekli birisi escortluk yap\u0131yor, kendilerince g\u00fcvenli\u011fie \u00f6nem vermi\u015fler ve savunma ama\u00e7l\u0131 bir\u015feyler yapm\u0131\u015flar ama ayn\u0131 \u015firkete birka\u00e7 g\u00fcnl\u00fck bi \u00e7al\u0131\u015fmayla t\u00fcm g\u00fcvenlik kameras\u0131 kay\u0131tlar\u0131n\u0131 izleyebiliyor, y\u00f6neticilerin ara\u00e7lar\u0131n\u0131 takip edebiliyor, \u015firket i\u00e7i ip telefon g\u00f6r\u00fc\u015fmelerini dinleyebiliyor, gelen giden mailleri okuyabiliyor (dolay\u0131s\u0131yla farkl\u0131 sistemlerin de bilgileri, kredi kart\u0131 harcama \u00f6zetlerini, cep telefonu g\u00f6r\u00fc\u015fme kay\u0131tlar\u0131 vs) muhasebe kay\u0131tlar\u0131n\u0131n raporunu alabiliyor, verdikleri 30 milyonluk fiyat tekliflerini g\u00f6rebiliyor, ald\u0131klar\u0131 sipari\u015flerin t\u00fcm detaylar\u0131na eri\u015febiliyorsunuz. \u015eirketlerin bilgi g\u00fcvenli\u011fi anlay\u0131\u015f\u0131, i\u015fin sadece teori k\u0131sm\u0131n\u0131 dershane mant\u0131\u011f\u0131yla anlat\u0131p ge\u00e7en bilgi g\u00fcvenli\u011fi dan\u0131\u015fmanl\u0131\u011f\u0131 firmalar\u0131ndan ald\u0131klar\u0131 iso27001 sertifikalar\u0131yla sabit. Firma sahipleri vicdani olarak rahatlay\u0131p tatmin oluyorlar kendilerini g\u00fcvende zannediyorlar. Bu dan\u0131\u015fmanl\u0131k firmalar\u0131n\u0131n \u015firket sahiplerine yapt\u0131\u011f\u0131 g\u00fcven a\u015f\u0131lamak, ger\u00e7ek anlamda olabileceklerden maalesef bihaberler. Bunlar\u0131n hepsinin imkans\u0131z \u00fctopik bir\u015fey oldu\u011funu zannediyorlar \u00e7\u00fcnk\u00fc maalesef o bilin\u00e7 yok, anlatan \u00e7ok g\u00f6steren yok.
\nBirg\u00fcn umar\u0131m bilgi g\u00fcvenli\u011finin \u00f6nemi art\u0131k herkes taraf\u0131ndan kavranm\u0131\u015f olur. \u00d6nemli olan, rakipleriniz (ya da e\u011fer bir devletseniz d\u00fc\u015fmanlar\u0131n\u0131z\u0131n, ter\u00f6ristlerin) bu bilince ula\u015f\u0131p sizin cahilli\u011finizi kullanmadan \u00f6nce sizin de bilin\u00e7lenmeniz. Devlet sistemleri, \u00fcniversiteler, web siteleri, \u015firketler vs.. Bu fark\u0131ndal\u0131kta olan insanlar, kendi hayatlar\u0131nda hangi pozisyonda olursa meslekleri ne olursa olsun bulunduklar\u0131 yere de otomatik olarak o bilinci ta\u015f\u0131m\u0131\u015f olurlar. \u00d6nemli olan herzaman insan fakt\u00f6r\u00fcd\u00fcr.”<\/p>\n","protected":false},"excerpt":{"rendered":"

Belli aral\u0131klarla sitemde baz\u0131 fikirlerine de\u011fer verdi\u011fim ki\u015filerin yaz\u0131lar\u0131n\u0131 payla\u015f\u0131yorum. Erhen Yaz\u0131c\u0131 ge\u00e7en g\u00fcn a\u015fa\u011f\u0131daki yaz\u0131y\u0131 facebook ortam\u0131nda payla\u015fm\u0131\u015ft\u0131. Onun da izni ile yaz\u0131y\u0131 siz okurlar\u0131mla payla\u015fmay\u0131 uygun g\u00f6rd\u00fcm. Bu arada k\u00fc\u00e7\u00fck bir bilgi Erhan…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-13068","post","type-post","status-publish","format-standard","hentry","category-blogum"],"yoast_head":"\nBir hacker i\u00e7in T\u00fcrkiye'de g\u00fcvenlik ne noktada? - At\u0131f Ünald\u0131<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/atif.unaldi.org\/blog\/2015\/11\/10\/turkiyede-siber-guvenlik-ne-noktada\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bir hacker i\u00e7in T\u00fcrkiye'de g\u00fcvenlik ne noktada? - At\u0131f Ünald\u0131\" \/>\n<meta property=\"og:description\" content=\"Belli aral\u0131klarla sitemde baz\u0131 fikirlerine de\u011fer verdi\u011fim ki\u015filerin yaz\u0131lar\u0131n\u0131 payla\u015f\u0131yorum. Erhen Yaz\u0131c\u0131 ge\u00e7en g\u00fcn a\u015fa\u011f\u0131daki yaz\u0131y\u0131 facebook ortam\u0131nda payla\u015fm\u0131\u015ft\u0131. Onun da izni ile yaz\u0131y\u0131 siz okurlar\u0131mla payla\u015fmay\u0131 uygun g\u00f6rd\u00fcm. 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