{"id":8183,"date":"2019-01-22T14:00:56","date_gmt":"2019-01-22T11:00:56","guid":{"rendered":"https:\/\/iletim.istanbul.edu.tr\/?p=8183"},"modified":"2019-08-01T13:48:07","modified_gmt":"2019-08-01T10:48:07","slug":"acele-etmek-zafiyet-yaratabiliyor","status":"publish","type":"post","link":"https:\/\/iletim.istanbul.edu.tr\/index.php\/2019\/01\/22\/acele-etmek-zafiyet-yaratabiliyor\/","title":{"rendered":"\u201cAcele Etmek Zafiyet Yaratabiliyor\u201d"},"content":{"rendered":"

Halil SA\u00c7<\/strong><\/p>\n

Bili\u015fim alan\u0131nda ya\u015fanan geli\u015fmelerle internet neredeyse ya\u015fam\u0131m\u0131z\u0131n vazge\u00e7ilmezi haline geldi. \u0130nternetin yayg\u0131nla\u015fmas\u0131 ise \u201csiber sald\u0131r\u0131\u201d ve \u201csiber g\u00fcvenlik\u201d gibi kavramlar\u0131n ya\u015fam\u0131m\u0131zda yer edinmesini sa\u011flad\u0131. \u0130stanbul \u00dcniversitesi Bilgisayar M\u00fchendisli\u011fi B\u00f6l\u00fcm\u00fc Siber G\u00fcvenlik Ana Bilim Dal\u0131\u2019ndan Dr. \u00d6\u011fr. \u00dcyesi \u00d6zg\u00fcr Can Turna, siber sald\u0131r\u0131lar\u0131 anlat\u0131p siber g\u00fcvenli\u011fin sa\u011flanmas\u0131 ad\u0131na \u00e7e\u015fitli t\u00fcyolar verdi.<\/p>\n

G\u00fcnl\u00fck ya\u015fam\u0131m\u0131zda s\u0131k\u00e7a kulland\u0131\u011f\u0131m\u0131z internetin \u00e7e\u015fitli alanlarda g\u00fcvenlik zay\u0131fl\u0131klar\u0131n\u0131 da beraberinde getirdi\u011fini belirten Dr. \u00d6\u011fr. \u00dcyesi \u00d6zg\u00fcr Can Turna, \u201cSiber g\u00fcvenli\u011fin anlatmak i\u00e7in \u00f6ncelikle \u2018siber sald\u0131r\u0131\u2019 kavram\u0131na de\u011finmemiz gerekiyor. Siber sald\u0131r\u0131lar genellikle \u2018hacker\u2019 olarak tan\u0131mlad\u0131\u011f\u0131m\u0131z ki\u015filer taraf\u0131ndan ger\u00e7ekle\u015ftirilen, sitelere veya bilgisayarlara zarar vermek, bilgi \u00e7almak gibi ama\u00e7larla yap\u0131lan sald\u0131r\u0131lar olarak tan\u0131mlanmaktad\u0131r\u201d dedi.<\/p>\n

Hacker\u0131n bir i\u015fte uzmanla\u015fm\u0131\u015f ve o i\u015fi en ince ayr\u0131nt\u0131s\u0131na kadar bilen ki\u015fi oldu\u011funa de\u011finen Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cHacker kelimesi art\u0131k daha \u00e7ok, bili\u015fim sistemlerinin detaylar\u0131n\u0131 iyi bilen ve burada buldu\u011fu a\u00e7\u0131kl\u0131klar\u0131 k\u00f6t\u00fc ama\u00e7lar i\u00e7in kullan ki\u015fi olarak tan\u0131mlanmaktad\u0131r\u201d \u015feklinde konu\u015ftu.<\/p>\n

\u201c\u0130yi Hackerlar\u201d<\/strong><\/p>\n

Hackerler\u0131n sadece k\u00f6t\u00fc faaliyetler yapt\u0131\u011f\u0131 d\u00fc\u015f\u00fcncesinin yayg\u0131n ancak yanl\u0131\u015f oldu\u011funu belirten Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cSiber d\u00fcnyada iki t\u00fcr hacker vard\u0131r. Biri \u2018siyah \u015fapkal\u0131 hacker\u2019 \u00f6teki \u2018beyaz \u015fapkal\u0131 hacker\u2019. Siyah \u015fapkal\u0131lar, sanal alemin zafiyetlerini kullanarak sald\u0131r\u0131lar d\u00fczenleyen ve veri, para gibi \u015feyler elde etmeye \u00e7al\u0131\u015fanlard\u0131r. Beyaz \u015fapkal\u0131 hackerler ise siyah \u015fapkal\u0131lar\u0131n faaliyetlerini engellemek i\u00e7in \u00e7al\u0131\u015fan, iyi niyetli hackerlard\u0131r\u201d ifadelerine yer verdi.<\/p>\n

\u201cSiber G\u00fcvenlik Geni\u015f Bir Alan\u201d<\/strong><\/p>\n

Siber g\u00fcvenli\u011fi tan\u0131mlayan Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cEn genel anlam\u0131yla, siber alemdeki verilerin gizlili\u011finin korunmas\u0131 ve g\u00fcvenli\u011finin sa\u011flanmas\u0131d\u0131r. Bu nedenle bu tan\u0131m kapsam\u0131na girebilen her \u015fey siber g\u00fcvenli\u011fi kar\u015f\u0131lamaktad\u0131r\u201d s\u00f6zlerini sarf etti.<\/p>\n

Siber g\u00fcvenli\u011fin ba\u015flarda sadece bilgisayar g\u00fcvenli\u011fi anlam\u0131na geldi\u011fine vurgu yapan Dr. \u00d6\u011fr. \u00dcyesi Turna, konu\u015fmas\u0131n\u0131n devam\u0131nda \u015fu s\u00f6zlere yer verdi: \u201cBili\u015fim sistemlerinin geli\u015fmesiyle beraber siber g\u00fcvenlik de \u2018donan\u0131m g\u00fcvenli\u011fi, kullan\u0131c\u0131 g\u00fcvenli\u011fi, a\u011f g\u00fcvenli\u011fi, yaz\u0131l\u0131m g\u00fcvenli\u011fi, veri g\u00fcvenli\u011fi\u2019 gibi \u00e7e\u015fitli alt dallara ayr\u0131ld\u0131.\u201d<\/p>\n

\u201cKlasik Uygulamalar Yetersiz Kalabiliyor\u201d<\/strong><\/p>\n

Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cBirey siber g\u00fcvenli\u011finin sa\u011flamas\u0131 i\u00e7in antivir\u00fcs program\u0131 kullan\u0131m\u0131 yayg\u0131n bir y\u00f6ntem olup vir\u00fcsleri bulmak, karantina alt\u0131na almak, temizlemek ve veri kurtarmak i\u00e7in kullan\u0131lan yaz\u0131l\u0131mlard\u0131r.\u00a0 Lakin baz\u0131 durumlarda yetersiz kalabilmektedirler. Bunlar her ne kadar ki\u015fiyi d\u0131\u015far\u0131dan gelecek sald\u0131r\u0131lara ve kullan\u0131c\u0131n\u0131n yapaca\u011f\u0131 hatalara kar\u015f\u0131 koruyucu olsalar da yaz\u0131l\u0131mlar\u0131n i\u00e7indeki baz\u0131 a\u00e7\u0131klar bizi sald\u0131r\u0131lara kar\u015f\u0131 korumas\u0131z b\u0131rakabilmektedir\u201d dedi.<\/p>\n

S\u00f6zlerine ba\u015fka bir g\u00fcvenlik y\u00f6ntemi ile devam eden Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cG\u00fcvenlik duvar\u0131, yani \u2018firewall\u2019 yaz\u0131l\u0131mlar\u0131, sistemin korunmas\u0131 i\u00e7in kullan\u0131lan bir ba\u015fka y\u00f6ntemdir. G\u00fcvenlik duvar\u0131, bilgisayar\u0131n giri\u015f ve \u00e7\u0131k\u0131\u015f kanallar\u0131n\u0131 kontrol alt\u0131nda tutarak istenmeyen veya beklenmeyen bir kanal \u00fczerinden zararl\u0131 yaz\u0131l\u0131mlar\u0131n ileti\u015fim kurmas\u0131n\u0131 engelleyerek korunmam\u0131z\u0131 sa\u011flar\u201d ifadelerini kulland\u0131.<\/p>\n

Dr. \u00d6\u011fr. \u00dcyesi Turna, dikkate al\u0131nmayan baz\u0131 \u015feylerin g\u00fcvenlik zafiyeti yaratt\u0131\u011f\u0131n\u0131 belirtip, \u201cBizler uygulamalarda, sitelerde gezinirken zamandan kazanma ad\u0131na aceleci davran\u0131p bir\u00e7ok \u015feye dikkat etmiyoruz. \u00d6rne\u011fin, ad\u0131mlar halinde ger\u00e7ekle\u015ftirilen i\u015flemlerde \u2018 tamam, devam et\u2019 gibi butonlara t\u0131klay\u0131p bir an \u00f6nce ge\u00e7mek istiyoruz ancak bunlar \u00e7e\u015fitli g\u00fcvenlik zafiyetlerinin ortaya \u00e7\u0131kmas\u0131na neden olabiliyor\u201d dedi.<\/p>\n

Bu kapsamda geli\u015ftirilen uygulamalar ve internet taray\u0131c\u0131lar\u0131n\u0131n kullan\u0131c\u0131lar\u0131na yard\u0131mc\u0131 olamaya \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 belirten Dr. \u00d6\u011fr. \u00dcyesi Turna, s\u00f6zlerine \u015fu \u015fekilde devam etti: \u201cBir\u00e7ok uygulama ve internet taray\u0131c\u0131s\u0131 kullan\u0131c\u0131lar\u0131n\u0131 bilgilendirmek i\u00e7in y\u00f6nergeler sunmakta, tehlike anlar\u0131nda onlar\u0131 uyarmaktad\u0131r.\u201d<\/p>\n

\u201cG\u00fcncellemeler \u0130hmal Edilmemeli\u201d<\/strong><\/p>\n

Birey kaynakl\u0131 g\u00fcvenlik ihmallerinin \u00f6nlenebilir oldu\u011funa vurgu yapan Dr. \u00d6\u011fr. \u00dcyesi Turna, \u201cSiber g\u00fcvenli\u011fin sa\u011flanabilmesi i\u00e7in cihaz\u0131n\u0131zda kulland\u0131\u011f\u0131n\u0131z uygulamalar\u0131n g\u00fcncel olmas\u0131 gerekmektedir. Uygulama veya cihaz \u00fcreticileri \u00fcr\u00fcnlerindeki a\u00e7\u0131klar\u0131n\u0131 kapatma ad\u0131na s\u00fcrekli bir bi\u00e7imde \u00e7al\u0131\u015fmalar yaparlar. Bu nedenle g\u00fcncellemelerinizi d\u00fczenli olarak yapman\u0131zda fayda var. Bunlar\u0131n d\u0131\u015f\u0131nda, antivir\u00fcs program\u0131 ve g\u00fcvenlik duvar\u0131 kullanman\u0131z da \u00f6nemli bir noktada durmaktad\u0131r\u201d dedi.<\/p>\n","protected":false},"excerpt":{"rendered":"

Bili\u015fim alan\u0131nda ya\u015fanan geli\u015fmelerle internet neredeyse ya\u015fam\u0131m\u0131z\u0131n vazge\u00e7ilmezi haline geldi. \u0130nternetin yayg\u0131nla\u015fmas\u0131 ise \u201csiber sald\u0131r\u0131\u201d ve \u201csiber g\u00fcvenlik\u201d gibi kavramlar\u0131n ya\u015fam\u0131m\u0131zda yer edinmesini sa\u011flad\u0131. \u0130stanbul \u00dcniversitesi Bilgisayar M\u00fchendisli\u011fi B\u00f6l\u00fcm\u00fc Siber G\u00fcvenlik Ana Bilim Dal\u0131\u2019ndan Dr. \u00d6\u011fr. \u00dcyesi \u00d6zg\u00fcr Can Turna, siber sald\u0131r\u0131lar\u0131 anlat\u0131p siber g\u00fcvenli\u011fin sa\u011flanmas\u0131 ad\u0131na \u00e7e\u015fitli t\u00fcyolar verdi.
\nG\u00fcnl\u00fck ya\u015fam\u0131m\u0131zda s\u0131k\u00e7a kulland\u0131\u011f\u0131m\u0131z internetin \u00e7e\u015fitli alanlarda g\u00fcvenlik zay\u0131fl\u0131klar\u0131n\u0131 da beraberinde getirdi\u011fini belirten Dr. \u00d6\u011fr. \u00dcyesi \u00d6zg\u00fcr Can Turna, \u201cSiber g\u00fcvenli\u011fin anlatmak i\u00e7in \u00f6ncelikle \u2018siber sald\u0131r\u0131\u2019 kavram\u0131na de\u011finmemiz gerekiyor. Siber sald\u0131r\u0131lar genellikle \u2018hacker\u2019 olarak tan\u0131mlad\u0131\u011f\u0131m\u0131z ki\u015filer taraf\u0131ndan ger\u00e7ekle\u015ftirilen, sitelere veya bilgisayarlara zarar vermek, bilgi \u00e7almak gibi ama\u00e7larla yap\u0131lan sald\u0131r\u0131lar olarak tan\u0131mlanmaktad\u0131r\u201d dedi.<\/p>\n","protected":false},"author":14,"featured_media":8184,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[31],"tags":[],"class_list":["post-8183","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"_links":{"self":[{"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/posts\/8183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/comments?post=8183"}],"version-history":[{"count":0,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/posts\/8183\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/media\/8184"}],"wp:attachment":[{"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/media?parent=8183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/categories?post=8183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iletim.istanbul.edu.tr\/index.php\/wp-json\/wp\/v2\/tags?post=8183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}