{"id":7736,"date":"2021-11-27T12:54:00","date_gmt":"2021-11-27T09:54:00","guid":{"rendered":"https:\/\/www.hosting.com.tr\/blog\/?p=7736"},"modified":"2025-08-15T08:19:07","modified_gmt":"2025-08-15T05:19:07","slug":"siber-guvenlik","status":"publish","type":"post","link":"https:\/\/www.hosting.com.tr\/blog\/siber-guvenlik\/","title":{"rendered":"Siber G\u00fcvenlik Nedir? \u0130nternet Ortam\u0131nda Veri G\u00fcvenli\u011fini Nas\u0131l Sa\u011flar\u0131z?"},"content":{"rendered":"\r\n<p>\u0130nsanlar\u0131n her t\u00fcrl\u00fc i\u015fini internet ve dijital ortamda yapt\u0131\u011f\u0131 bug\u00fcnlerde \u00f6nemi gitgide artan konulardan biri de Siber g\u00fcvenliktir. Siber g\u00fcvenlik, dijital ortamda yap\u0131lan her i\u015f, saklanan her veri ve dijital cihaz\u0131n, \u00fc\u00e7\u00fcnc\u00fc ki\u015filer taraf\u0131ndan elde edilmesinin, manip\u00fcle edilmesinin veya zarar g\u00f6rmesinin \u00f6n\u00fcne ge\u00e7mek i\u00e7in olu\u015fturulmu\u015f ara\u00e7, y\u00f6ntem ve disiplinlerdir.<\/p>\r\n\r\n\r\n\r\n<p>Siber g\u00fcvenlik her daim sistemi manip\u00fcle etmeye \u00e7al\u0131\u015fan k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filerin bir ad\u0131m \u00f6n\u00fcnde olmak zorundad\u0131r. Bu olay\u0131 biraz da halat \u00e7ekme yar\u0131\u015fmas\u0131na benzetebiliriz. Bir tarafta g\u00fcvenli\u011fimizi sa\u011flamaya \u00e7al\u0131\u015fan sistemler, yap\u0131lar ve ki\u015filer di\u011fer tarafta onlar\u0131 manip\u00fcle etmeye \u00e7al\u0131\u015fan k\u00f6t\u00fc niyetli ki\u015filer, yaz\u0131l\u0131mlar ve ara\u00e7lar bulunur.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Her g\u00fcn geli\u015fen ve de\u011fi\u015fen bu sistemler i\u00e7inde kendi g\u00fcvenli\u011fimizi sa\u011flaman\u0131n en \u00f6nemli yolu g\u00fcncel olmakt\u0131r. Bu sebeple isterseniz <strong>\u201cSiber g\u00fcvenlik nedir?\u201d<\/strong> ve <strong>\u201c\u0130nternet ortam\u0131nda veri g\u00fcvenli\u011fini nas\u0131l sa\u011flar\u0131z?\u201d<\/strong> konusunun detaylar\u0131na gelelim.<\/p>\r\n\r\n\r\n\r\n<h2 id=\"siber-guvenligimizi-tehdit-eden-etkenler-nelerdir\" class=\"wp-block-heading\">Siber G\u00fcvenli\u011fimizi Tehdit Eden Etkenler Nelerdir?<\/h2>\r\n\r\n\r\n\r\n<p>Tabii \u00f6ncelikle g\u00fcvenli\u011fimizi tehdit eden etkenlerin ne oldu\u011funu a\u00e7\u0131klamak gerekir. Hackerlar ve onlar\u0131n kulland\u0131\u011f\u0131 K\u00f6t\u00fc Ama\u00e7l\u0131 Yaz\u0131l\u0131mlar (Vir\u00fcsler v.b.) bizi do\u011frudan tehdit eden en \u00f6nemli etkenlerdir. Ama\u00e7lar\u0131na ve kulland\u0131klar\u0131 ara\u00e7lara g\u00f6re al\u0131nmas\u0131 gereken \u00f6nlemler de de\u011fi\u015fiklik g\u00f6sterir.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" class=\"wp-image-7739\" src=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-1024x731.jpg\" alt=\"Siber G\u00fcvenli\u011fimizi Tehdit Eden Etkenler Nelerdir?\" srcset=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-1024x731.jpg 1024w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-300x214.jpg 300w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-768x549.jpg 768w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-1536x1097.jpg 1536w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-2048x1463.jpg 2048w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/veri-guvenligi-nedir-scaled.jpg 2560w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 id=\"siber-saldiri-yontemleri-ve-onlardan-korunma-yollari-nelerdir\" class=\"wp-block-heading\">Siber Sald\u0131r\u0131 Y\u00f6ntemleri ve Onlardan Korunma Yollar\u0131 Nelerdir?<\/h2>\r\n\r\n\r\n\r\n<h3 id=\"virusler-ve-diger-kotu-amacli-yazilimlar\" class=\"wp-block-heading\">Vir\u00fcsler ve Di\u011fer K\u00f6t\u00fc Ama\u00e7l\u0131 Yaz\u0131l\u0131mlar<\/h3>\r\n\r\n\r\n\r\n<p>\u0130lk ba\u015fta bir lise \u00f6\u011frencisinin arkada\u015flar\u0131na \u015faka yapma amac\u0131yla olu\u015fturdu\u011fu vir\u00fcsler g\u00fcn\u00fcm\u00fczde \u00e7ok farkl\u0131 ama\u00e7larla kullan\u0131labiliyor. Baz\u0131lar\u0131 sadece zarar vermek, baz\u0131s\u0131 ki\u015fisel verilerinize ula\u015fmay\u0131 sa\u011flamak, sistemlerimizi ele ge\u00e7irmek ya da fidye istemek amac\u0131yla olu\u015fturulmu\u015ftur.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Her durumda tan\u0131mad\u0131\u011f\u0131n\u0131z ki\u015filerden gelecek iletiler, mesajlar, linkler, E-postalar sizi bu sald\u0131r\u0131n\u0131n kurban\u0131 haline getirebilir. Bunun yan\u0131nda bilmedi\u011fimiz kaynaklardan indirilen veya temin edilen programlar\u0131 bilgisayarlar\u0131m\u0131zda ve di\u011fer cihazlar\u0131m\u0131z\u0131 y\u00fcklemek\u00a0 bu sald\u0131r\u0131lar\u0131n hedefi olmam\u0131z\u0131 sa\u011flayabilir. En \u00e7ok kullan\u0131lan k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar;<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Vir\u00fcs<\/li>\r\n<li>Trojan<\/li>\r\n<li><a href=\"https:\/\/www.hosting.com.tr\/bilgi-bankasi\/keylogger-nedir\/\">Keylogger<\/a><\/li>\r\n<li>Fidye yaz\u0131l\u0131mlar\u0131<\/li>\r\n<li>Sistemleri bozan k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 id=\"ag-saldirilari\" class=\"wp-block-heading\">A\u011f Sald\u0131r\u0131lar\u0131<\/h3>\r\n\r\n\r\n\r\n<p>\u0130nternet, bir a\u011f \u00fczerinden insanlar\u0131n birbirleri ile ileti\u015fim kurdu\u011fu veri al\u0131\u015fveri\u015finde bulundu\u011fu sisteme verilen isimdir. Kablolu ve kablosuz internet a\u011flar\u0131na ba\u011flanarak istedi\u011fimiz i\u015flemleri online bir \u015fekilde ger\u00e7ekle\u015ftirebiliyoruz. Bu a\u011flar\u0131n yap\u0131lar\u0131n\u0131 \u00e7ok iyi bilen k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer bir\u00e7ok farkl\u0131 y\u00f6ntem kullanarak verilerinizi ele ge\u00e7irebiliyor. En \u00e7ok kullan\u0131lan y\u00f6ntemler;<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Sniffing (A\u011f Dinleme, Koklama)<\/li>\r\n<li>MITM (Man in The Middle) sald\u0131r\u0131s\u0131<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u015eeklinde kar\u015f\u0131m\u0131za \u00e7\u0131k\u0131yor. Bir internet a\u011f\u0131n\u0131, o a\u011fa ba\u011flanan di\u011fer ki\u015filer rahatl\u0131kla dinleyebiliyor. \u0130nternet \u00fczerinde paketler halinde ge\u00e7en veriler \u00f6zel dinleme programlar\u0131yla takip edilebiliyor, \u015fifreleriniz, kullan\u0131c\u0131 adlar\u0131n\u0131z ve hatta al\u0131p verdi\u011finiz dosyalar ba\u015fkalar\u0131n\u0131n eline ge\u00e7ebiliyor.\u00a0\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Bunu engellemenin tabii bir\u00e7ok yolu var. G\u00fcvenli bir a\u011f yap\u0131s\u0131 olu\u015fturularak a\u011fa ba\u011flanan 3. ki\u015filerin kabiliyetleri k\u0131s\u0131tlanabilir. Kritik verilerin aktar\u0131m\u0131 sadece kablo yoluyla ne k\u0131s\u0131tl\u0131 bir a\u011f yap\u0131s\u0131 ile ger\u00e7ekle\u015ftirilebilir veya \u015fifreleme y\u00f6ntemi ile \u00fc\u00e7\u00fcnc\u00fc ki\u015filerin anlamas\u0131n\u0131n \u00f6n\u00fcne ge\u00e7ilebilir.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"ddos-saldirilari\" class=\"wp-block-heading\">DDoS Sald\u0131r\u0131lar\u0131<\/h3>\r\n\r\n\r\n\r\n<p>DDoS (Distributed Denial of Service) \u00e7ok say\u0131da ve da\u011f\u0131n\u0131k halde bulunan ve kontrol alt\u0131na al\u0131nm\u0131\u015f bilgisayar\u0131n (Botnet A\u011f\u0131) belirli bir noktaya veri paketleri g\u00f6ndermesi veya ba\u011flant\u0131 olu\u015fturma talebinde bulunmas\u0131 mant\u0131\u011f\u0131 ile ger\u00e7ekle\u015fen sald\u0131r\u0131lard\u0131r. Kapasitesinin \u00e7ok \u00fcst\u00fcnde ba\u011flant\u0131 iste\u011finin veya veri aktar\u0131m\u0131n\u0131n ayn\u0131 anda bir kayna\u011fa iletilmesi o kayna\u011f\u0131n ba\u011fl\u0131 bulundu\u011fu sunucuyu Down\u00a0 edecektir. Bu sayede \u00e7al\u0131\u015fmayan sunucu yay\u0131n\u0131n\u0131 ger\u00e7ekle\u015ftiremeyece\u011fi i\u00e7in internet sitesi veya a\u011flar di\u011fer ziyaret\u00e7iler taraf\u0131ndan ula\u015f\u0131lamayacak hale gelir.\u00a0<\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/www.hosting.com.tr\/bilgi-bankasi\/ddos-nedir\/\">DDoS sald\u0131r\u0131lar\u0131<\/a> genelde internet siteleri, bankac\u0131l\u0131k sistemleri, borsalar ve di\u011fer g\u00fcvenlik sistemlerine zarar vermek amac\u0131yla ger\u00e7ekle\u015ftirilir. Bu sald\u0131r\u0131dan korunman\u0131n en temel yollar\u0131ndan birisi Cloudflare kullanmakt\u0131r. Cloudflare sunucular\u0131 d\u00fcnya genelinde \u00e7ok say\u0131da olmas\u0131 ve bandwidthlerinin \u00e7ok y\u00fcksek olmas\u0131 nedeniyle bu sald\u0131r\u0131lardan nispeten daha az etkilenirler.Yine mevcut sunucunuzun Bandwidth de\u011ferlerini y\u00fcksek tutarak daha az etkilenme sa\u011flayabilirsiniz.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"sql-injection\" class=\"wp-block-heading\">SQL Injection<\/h3>\r\n\r\n\r\n\r\n<p>SQL injection y\u00f6ntemi veritabanlar\u0131na s\u0131zmak i\u00e7in kullan\u0131lan bir y\u00f6ntemdir. Veritabanlar\u0131n\u0131zda olu\u015fan g\u00fcvenlik a\u00e7\u0131klar\u0131 internet sitelerinin \u00fczerindeki formlar yard\u0131m\u0131yla tespit edilerek kullan\u0131l\u0131r ve veritabanlar\u0131nda tutulan ki\u015fisel veriler, kredi kart\u0131 bilgileri, adres, telefon, kimlik bilgileri gibi \u00f6zel bilgilere ula\u015f\u0131labilir.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Veritaban\u0131n\u0131z ve PHP s\u00fcr\u00fcmlerinizin en son versiyon ve g\u00fcncel oldu\u011funa emin olman\u0131z nispeten sizi koruyacak ad\u0131mlard\u0131r.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"bruteforce-attack\" class=\"wp-block-heading\">BruteForce Attack<\/h3>\r\n\r\n\r\n\r\n<p>Bir kullan\u0131c\u0131n\u0131n kullan\u0131c\u0131 ad\u0131 ve \u015fifresini deneme yan\u0131lma y\u00f6ntemi ile bulma i\u015flemi ne kaba kuvvet sald\u0131r\u0131s\u0131 veya brute Force Attack denir. Geli\u015fmi\u015f g\u00fc\u00e7l\u00fc bilgisayarlar ve birtak\u0131m yaz\u0131l\u0131mlar yard\u0131m\u0131yla \u00e7ok h\u0131zl\u0131 bir \u015fekilde \u00e7ok say\u0131da \u015fifre kombinasyonu denenerek ki\u015finin kullanm\u0131\u015f oldu\u011fu \u015fifre bulunmaya \u00e7al\u0131\u015f\u0131l\u0131r.\u00a0 Genelde bu yaz\u0131l\u0131mlar en s\u0131k kullan\u0131lan \u015fifreleri en \u00f6nce deneyerek i\u015fe ba\u015flarlar. Daha sonras\u0131nda di\u011fer kombinasyonlar \u00f6zel haz\u0131rlanm\u0131\u015f \u015fifre dosyalar\u0131 i\u00e7inden se\u00e7ilerek tek tek denenir. Bu i\u015flem o kadar h\u0131zl\u0131 yap\u0131l\u0131r ki k\u0131sa s\u00fcre i\u00e7inde \u015fifre elde edilmi\u015f olur.\u00a0 Bu sald\u0131r\u0131dan korunman\u0131n en temel yollar\u0131ndan biri\u00a0 b\u00fcy\u00fck k\u00fc\u00e7\u00fck harf rakam ve simgeler ve \u00e7ok farkl\u0131 kombinasyonlardan olu\u015fan \u015fifreler belirlemektir.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Ayr\u0131ca belirli say\u0131da hatal\u0131 \u015fifre denemesinden sonra sistemin bir s\u00fcre otomatik olarak kapanmas\u0131 kullan\u0131lan bir di\u011fer y\u00f6ntemdir.\u00a0<\/p>\r\n\r\n\r\n\r\n<h3 id=\"phishing-oltalama\" class=\"wp-block-heading\">Phishing (Oltalama)<\/h3>\r\n\r\n\r\n\r\n<p>G\u00fcn\u00fcm\u00fczde belki de en \u00e7ok kullan\u0131lan y\u00f6ntemlerden biridir. Biraz dikkatinizin da\u011f\u0131ld\u0131\u011f\u0131 bir durumda siz de bu sald\u0131r\u0131n\u0131n hedefi haline gelebilirsiniz. Oltalama y\u00f6ntemine, bir banka internet sitesinin kopyas\u0131n\u0131n olu\u015fturularak kullan\u0131c\u0131 ad\u0131 ve \u015fifrenizi elde etme \u00e7al\u0131\u015fmak \u00f6rnek olarak verilebilir. Taraf\u0131n\u0131za bankan\u0131za \u00e7ok benzeyen bir mail adresi \u00fczerinden gelen tebrik, uyar\u0131 veya \u00f6d\u00fcl mailleri \u015f\u00fcphe ile yakla\u015f\u0131lmas\u0131 gereken durumlard\u0131r. <strong>&#8220;A\u015fa\u011f\u0131daki linki t\u0131klayarak giri\u015f yap\u0131n&#8221;<\/strong> gibi ibareler varsa o E-posta iletisinden \u00e7\u0131k\u0131\u015f yap\u0131larak,\u00a0 taray\u0131c\u0131n\u0131za kendi bildi\u011finiz adres \u00fczerinden giri\u015f yapmak en ak\u0131ll\u0131ca y\u00f6ntem olacakt\u0131r. Bir di\u011fer g\u00fcvenlik y\u00f6ntemi ise 2FA g\u00fcvenlik y\u00f6ntemini aktive etmektir. <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.google.android.apps.authenticator2\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Google Authenticator <\/a>uygulamas\u0131 bunun i\u00e7in kullanabilece\u011finiz en iyi yaz\u0131l\u0131md\u0131r.\u00a0<\/p>\r\n\r\n\r\n\r\n<h3 id=\"sosyal-muhendislik\" class=\"wp-block-heading\">Sosyal M\u00fchendislik<\/h3>\r\n\r\n\r\n\r\n<p>Sosyal m\u00fchendislik y\u00f6ntemi de bir \u00e7e\u015fit hedef g\u00f6zeten sald\u0131r\u0131d\u0131r. \u0130leti\u015fimde oldu\u011funuz ki\u015filer internet al\u0131\u015fkanl\u0131klar\u0131n\u0131z ve kulland\u0131\u011f\u0131n\u0131z uygulamalar takip edilerek ara\u015ft\u0131r\u0131l\u0131r. Daha sonra sizin \u015f\u00fcphelenme yiyece\u011finiz E-mail\u2019ler veya telefon mesajlar\u0131 yoluyla Phishing y\u00f6ntemine tabi tutulursunuz.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Sizin \u015f\u00fcpheye d\u00fc\u015fmenizi engelleyecek derecede g\u00fcvenilir kaynaklardan gelen mesajlar olacakt\u0131r. Bu sebeple bu tarz sald\u0131r\u0131lardan korunman\u0131n en temel yolu hi\u00e7bir linke t\u0131klamamakt\u0131r.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"yetki-yukseltme\" class=\"wp-block-heading\">Yetki Y\u00fckseltme<\/h3>\r\n\r\n\r\n\r\n<p>Bir sisteme standart kullan\u0131c\u0131 olarak giri\u015f yapan bir ki\u015fi daha sonras\u0131nda baz\u0131 uygulamalar ve bir tak\u0131m kodlar yard\u0131m\u0131yla root d\u00fczeyinde yetkiye sahip bir kullan\u0131c\u0131 haline gelebilir.\u00a0 Bu da sistemi en \u00fcst seviye kontrol yetkisi ile kullan\u0131labilece\u011fi anlam\u0131na gelir.\u00a0 sistemde her t\u00fcrl\u00fc de\u011fi\u015fikli\u011fi yapabilir kullan\u0131c\u0131lar olu\u015fturabilir baz\u0131 kullan\u0131c\u0131lar\u0131n yetkilerini k\u0131s\u0131tlayabilir veya tamamen kald\u0131rabilir. Bu durumda yap\u0131labilecek en iyi \u00f6nlem yetki y\u00fckseltme i\u015fleminin k\u0131s\u0131tlanmas\u0131 ve s\u00fcrekli olarak sistem a\u00e7\u0131klar\u0131n\u0131n kontrol edilmesidir.\u00a0<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"944\" class=\"wp-image-7738\" src=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2-1024x944.jpg\" alt=\"\" srcset=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2-1024x944.jpg 1024w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2-300x277.jpg 300w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2-768x708.jpg 768w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2-1536x1417.jpg 1536w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/siber-guvenlik-onlemleri-2.jpg 1814w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 id=\"siber-guvenlik-cesitleri\" class=\"wp-block-heading\">Siber G\u00fcvenlik \u00c7e\u015fitleri<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>A\u011f G\u00fcvenli\u011fi;<\/strong> \u00d6nemli i\u015flemlerin yap\u0131ld\u0131\u011f\u0131 bilgisayar a\u011flar\u0131n\u0131n,\u00a0 zararl\u0131 yaz\u0131l\u0131mlar ve k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer taraf\u0131ndan Manip\u00fcle edilmesinin \u00f6nlenmesi bu kapsama girer. Bu tarz a\u011flar m\u00fcmk\u00fcn oldu\u011funca d\u0131\u015fa kapal\u0131 olacak \u015fekilde organize edilmelidir.<\/li>\r\n<li><strong>Program G\u00fcvenli\u011fi;<\/strong>\u00a0 \u00f6nemli i\u015flevleri olan uygulamalar programlar \u00f6nemli sistemleri kontrol eden programlar yine zararl\u0131 yaz\u0131l\u0131mlar\u0131n etkisinden korunmal\u0131d\u0131r.\u00a0 \u00d6rne\u011fin bir \u015fehrin elektrik ve ayd\u0131nlatma sistemini kontrol eden bir sistemdeki program\u0131n m\u00fcmk\u00fcn oldu\u011funca zararl\u0131 yaz\u0131l\u0131mlardan korunmas\u0131 gerekir.<\/li>\r\n<li><strong>Bilgi G\u00fcvenli\u011fi;<\/strong> g\u00fcn\u00fcm\u00fcz \u015fartlar\u0131nda en b\u00fcy\u00fck \u00f6nem arz eden g\u00fcvenlik \u00e7e\u015fitlerinden biridir.\u00a0 Bu bilgilerin depolanmas\u0131 ta\u015f\u0131nmas\u0131 veya aktar\u0131lmas\u0131 esnas\u0131nda olu\u015facak \u00fcstlerin \u00f6n\u00fcne ge\u00e7mek i\u00e7in al\u0131nan g\u00fcvenlik \u00f6nlemleridir.\u00a0<\/li>\r\n<li><strong>\u00d6deme G\u00fcvenli\u011fi;<\/strong> verilen bir hizmet veya sat\u0131lan bir \u00fcr\u00fcne ait \u00f6demelerin g\u00fcvenli bir \u015fekilde ger\u00e7ekle\u015ftirilmesine odaklan\u0131lan g\u00fcvenlik \u00f6nlemleridir. Bu konuda bir\u00e7ok \u00f6nlem al\u0131nmas\u0131na ra\u011fmen hala bir\u00e7ok sorunla kar\u015f\u0131la\u015f\u0131l\u0131yor.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 id=\"en-etkili-siber-guvenlik-onlemleri\" class=\"wp-block-heading\">En Etkili Siber G\u00fcvenlik \u00d6nlemleri<\/h2>\r\n\r\n\r\n\r\n<h3 id=\"guncel-antivirus-yazilimlari-kullanin\" class=\"wp-block-heading\">G\u00fcncel Antivirus Yaz\u0131l\u0131mlar\u0131 Kullan\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Antivir\u00fcs yaz\u0131l\u0131mlar\u0131 internet ortam\u0131nda yay\u0131lan ve ki\u015filerce bildirilen t\u00fcm zararl\u0131 yaz\u0131l\u0131mlar\u0131n\u00a0 veritaban\u0131na kaydedilerek, engellenmesi \u00fczerine kurulmu\u015ftur.\u00a0 G\u00fcncel tutulan bir anti vir\u00fcs yaz\u0131l\u0131m\u0131 b\u00fcy\u00fck oranda sisteminizi koruyacakt\u0131r.\u00a0 \u00fccretli veya \u00fccretsiz \u00e7ok say\u0131da Antivir\u00fcs program\u0131 mevcuttur.\u00a0 Bunlar i\u00e7inden belirleyece\u011finiz bir antivir\u00fcs program\u0131n\u0131z\u0131 sisteminize d\u00e2hil etmeniz b\u00fcy\u00fck oranda koruman\u0131za yard\u0131mc\u0131 olur.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"firewall-donanim-ve-yazilimlari-kullanin\" class=\"wp-block-heading\">Firewall Donan\u0131m ve Yaz\u0131l\u0131mlar\u0131 Kullan\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Firewall ya da Ate\u015f Duvar\u0131 denilen yaz\u0131l\u0131mlar genelde Antivir\u00fcs programlar\u0131 ile entegre ve kombine bir \u015fekilde \u00e7al\u0131\u015f\u0131r.\u00a0 Ancak geli\u015fmi\u015f a\u011flar i\u00e7in kullan\u0131lan Firewall donan\u0131mlar\u0131 da vard\u0131r.\u00a0 Bu \u00f6zel ayg\u0131tlar a\u011f g\u00fcvenli\u011fini, zararl\u0131 yaz\u0131l\u0131mlar ve zararl\u0131 uygulamalar a\u00e7\u0131s\u0131ndan korurlar. Olduk\u00e7a maliyetli olan bu sistemler yerine g\u00f6rece daha uygun fiyatlara sahip firewall yaz\u0131l\u0131mlar\u0131 kullan\u0131labilir.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"isletim-sistemlerinizi-guncel-tutun\" class=\"wp-block-heading\">\u0130\u015fletim Sistemlerinizi G\u00fcncel Tutun<\/h3>\r\n\r\n\r\n\r\n<p>Kulland\u0131\u011f\u0131n\u0131z i\u015fletim sisteminin g\u00fcncel olmas\u0131 da siber sald\u0131r\u0131lara kar\u015f\u0131 daha g\u00fcvenli oldu\u011funuz anlam\u0131na gelecektir.\u00a0 Her yeni g\u00fcncelleme son d\u00f6nemde \u00e7\u0131kan t\u00fcm zararl\u0131 yaz\u0131l\u0131mlar\u0131 \u00f6n\u00fcne ge\u00e7ecek \u015fekilde i\u015fletim sistemlerini daha g\u00fcvenli hale getirir.\u00a0 E\u011fer korsan yaz\u0131l\u0131m kullan\u0131yorsan\u0131z genelde sistem g\u00fcncellemelerini kapat\u0131rs\u0131n\u0131z.\u00a0 B\u00f6yle bir durumda Siber sald\u0131r\u0131lara olduk\u00e7a a\u00e7\u0131k bir hale gelirsiniz.\u00a0 Bu sebeple lisansl\u0131 yaz\u0131l\u0131m kullanmak ve sistemleri g\u00fcncel tutmak at\u0131lacak en ak\u0131ll\u0131ca ad\u0131mlar olacakt\u0131r.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"internet-alisverislerinde-sanal-kart-kullanin\" class=\"wp-block-heading\">\u0130nternet Al\u0131\u015fveri\u015flerinde Sanal Kart Kullan\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Sanal kart hizmeti bir\u00e7ok bankan\u0131n sundu\u011fu bir hizmettir. Kendi ad\u0131n\u0131za internet al\u0131\u015fveri\u015fleri i\u00e7in olu\u015fturaca\u011f\u0131n\u0131z ve limitini sizin belirledi\u011finiz bir sanal kredi kart\u0131 ile sorun ya\u015faman\u0131z halinde, kart iptali ve yeni kart bas\u0131lana kadar ya\u015fanan ma\u011fduriyetlerin \u00f6n\u00fcne ge\u00e7mi\u015f olursunuz.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"928\" class=\"wp-image-7741\" src=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-1024x928.jpg\" alt=\"\u0130nternet Al\u0131\u015fveri\u015flerinde Sanal Kart Kullan\u0131n\" srcset=\"https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-1024x928.jpg 1024w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-300x272.jpg 300w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-768x696.jpg 768w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-1536x1391.jpg 1536w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2-2048x1855.jpg 2048w, https:\/\/www.hosting.com.tr\/blog\/wp-content\/uploads\/2021\/11\/sanal-kart-kullanin-2.jpg 2253w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\r\n\r\n\r\n\r\n<h3 id=\"guvenli-ag-konfigurasyonu-olusturun\" class=\"wp-block-heading\">G\u00fcvenli A\u011f Konfig\u00fcrasyonu Olu\u015fturun<\/h3>\r\n\r\n\r\n\r\n<p>\u0130yi bir a\u011f konfig\u00fcrasyonu ile a\u011f\u0131n\u0131za girecek ki\u015filerin g\u00f6revleri ve yetkilerini d\u00fczenleyebilirsiniz. Bilin\u00e7li bir a\u011f y\u00f6neticisi ile a\u011f\u0131n\u0131z\u0131 konfig\u00fcre edin.\u00a0 A\u011f\u0131n\u0131za s\u0131zan bir ki\u015fi dinleme yoluyla t\u00fcm kullan\u0131c\u0131 ad\u0131 ve \u015fifreleri elde edebilir, gerekirse \u015fifreleme yaz\u0131l\u0131mlar\u0131 kullanarak sniffing metotlar\u0131yla veri kaydetmenin \u00f6n\u00fcne ge\u00e7in.\u00a0\u00a0<\/p>\r\n\r\n\r\n\r\n<p>Kamuya a\u00e7\u0131k internet a\u011flar\u0131nda bankac\u0131l\u0131k ve di\u011fer \u00f6nemli i\u015flemlerinizi yapmamal\u0131s\u0131n\u0131z. Bu a\u011flar\u0131 kullanan k\u00f6t\u00fc niyetli ki\u015filer sizin i\u00e7in \u00f6nemi b\u00fcy\u00fck olan verilerinizi ele ge\u00e7irebilir.\u00a0<\/p>\r\n\r\n\r\n\r\n<h3 id=\"sifre-programlari-kullanin\" class=\"wp-block-heading\">\u015eifre Programlar\u0131 Kullan\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Bir kullan\u0131c\u0131 hesab\u0131na olu\u015fturdu\u011funuz \u015fifre ne kadar iyiyse o hesab\u0131n ba\u015fkalar\u0131 taraf\u0131ndan manip\u00fcle edilmesi o kadar zordur.\u00a0 Genelde kullan\u0131c\u0131lar kolay hat\u0131rlayabilecekleri \u015fifreleri olu\u015ftururlar.\u00a0 \u015eifre deneme programlar\u0131n\u0131n takti\u011fi de tam olarak budur.\u00a0 E\u011fer her kullan\u0131c\u0131 hesab\u0131n\u0131z i\u00e7in farkl\u0131 \u015fifreler olu\u015fturup onlar\u0131 da belirli aral\u0131klarla de\u011fi\u015ftirirseniz sistemlerinizin ba\u015fkalar\u0131nca ele ge\u00e7irilmesi pek m\u00fcmk\u00fcn olmayacakt\u0131r.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u015eifreleri ak\u0131lda tutmak olduk\u00e7a zor bir i\u015flemdir.\u00a0 Bu sebeple \u015fifre programlar\u0131 kullanabilirsiniz.\u00a0 Kullanaca\u011f\u0131n\u0131z bir \u015fifre program\u0131na t\u00fcm mevcut \u015fifrelerinizi kaydeder ve laz\u0131m olduk\u00e7a oradan \u00e7ekebilirsiniz. iOS ve Android i\u00e7in <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.agilebits.onepassword\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">1Password<\/a> yaz\u0131l\u0131m\u0131n\u0131 \u00f6nerebiliriz.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"vpn-veya-proxy-kullanin\" class=\"wp-block-heading\">VPN veya Proxy Kullan\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>IP adresleri de k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer taraf\u0131ndan kullan\u0131lan \u00f6zel bilgilerdir.\u00a0 Ba\u011flant\u0131lar\u0131n\u0131z\u0131 <a href=\"https:\/\/www.hosting.com.tr\/blog\/vpn\/\">VPN<\/a> ya da Proxy kullanarak ger\u00e7ekle\u015ftirirsiniz izlemeniz daha zor olacakt\u0131r. Genelde k\u0131s\u0131tlanm\u0131\u015f internet sitelerine ba\u011flant\u0131 i\u00e7in kullan\u0131lan VPN ve <a href=\"https:\/\/www.hosting.com.tr\/bilgi-bankasi\/proxy-nedir\/\">Proxy<\/a> hizmetleri, \u00f6zellikle \u015firketlerin kendi aralar\u0131nda ileti\u015fim ve veri al\u0131\u015fveri\u015fi i\u00e7in kullanabilecekleri \u00f6zel g\u00fcvenlik sistemleridir. \u00dccretli veya \u00fccretsiz bir \u015fekilde hizmet veren bir\u00e7ok VPN servisi mevcuttur.\u00a0 \u00dccretli olanlar\u0131n daha stabil ve kullan\u0131\u015fl\u0131 olmas\u0131 kuvvetle muhtemeldir.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"bir-siber-guvenlik-sirketinden-hizmet-alin\" class=\"wp-block-heading\">Bir Siber G\u00fcvenlik \u015eirketinden Hizmet Al\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Siber g\u00fcvenlik hizmeti veren \u00e7ok say\u0131da \u00f6zel kurulu\u015f mevcuttur.\u00a0 bu kurulu\u015flar olas\u0131 tehditlere kar\u015f\u0131 sistemlerimizi haz\u0131rlar gerekli yaz\u0131l\u0131mlar\u0131 y\u00fckler ve bilin\u00e7li olman\u0131z\u0131 sa\u011flarlar, belirli periyotlarla da sisteminizi kontrol ederek zararl\u0131 yaz\u0131l\u0131mlar\u0131 tespit edip \u00f6nlem alman\u0131z\u0131 sa\u011flar.\u00a0 G\u00fcn\u00fcm\u00fcz\u00fcn en temel ihtiya\u00e7lar\u0131ndan biri olan Siber g\u00fcvenlik konusu dikkate al\u0131nmal\u0131 ve bu konuda ad\u0131mlar at\u0131lmal\u0131d\u0131r.\u00a0\u015eirketler kendi b\u00fcnyelerinde Siber G\u00fcvenlik Uzman\u0131 da bulundurabilirler. Siber G\u00fcvenlik Uzmanl\u0131\u011f\u0131, \u015firketlerin gelecekte olduk\u00e7a yayg\u0131n bir \u015fekilde a\u00e7aca\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclen bir pozisyondur.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"pentest-penetrasyon-testi-uygulamasi-yaptirin\" class=\"wp-block-heading\">Pentest (Penetrasyon Testi) Uygulamas\u0131 Yapt\u0131r\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>E\u011fer sisteminizde \u00f6nemli veriler sakl\u0131yorsan\u0131z sisteminizi belirli aral\u0131klarla penetrasyon testine\u00a0 tabi tutman\u0131z ak\u0131ll\u0131ca olacakt\u0131r.\u00a0 Penetrasyon yani s\u0131zma testleri g\u00fcvenlik \u015firketleri taraf\u0131ndan ger\u00e7ekle\u015ftirilen \u00f6zel y\u00f6ntemlerdir.\u00a0 Genelde Hackerlar\u0131n kulland\u0131\u011f\u0131 y\u00f6ntemler ve ara\u00e7lar ile sisteminiz Siber g\u00fcvenlik a\u00e7\u0131s\u0131ndan teste tabi tutulur. Sistemde bulunan A\u00e7\u0131klar size rapor olarak sunulur ve bu alanlar\u0131n geli\u015ftirilmesi istenir.<\/p>\r\n\r\n\r\n\r\n<p>Belirli aral\u0131klarla pentest uygulatmak veri g\u00fcvenli\u011finiz a\u00e7\u0131s\u0131ndan at\u0131lacak \u00f6nemli ad\u0131mlardan biridir.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"duzenli-olarak-yedek-alin\" class=\"wp-block-heading\">D\u00fczenli Olarak Yedek Al\u0131n<\/h3>\r\n\r\n\r\n\r\n<p>Veritaban\u0131n\u0131z ve sisteminizin d\u00fczenli olarak yedeklerini almak, sisteminize yap\u0131lan sald\u0131r\u0131lar sonucunda olu\u015facak veri kay\u0131plar\u0131n\u0131 \u00f6nlemenin en temel unsurlar\u0131ndand\u0131r. Alaca\u011f\u0131n\u0131z d\u00fczenli Backup ile verilerinizin silinmesi veya k\u00f6t\u00fc niyetli ki\u015filerce fidye ama\u00e7l\u0131 \u015fifrelenmesi durumunda son kay\u0131ttan geri d\u00f6nme \u015fans\u0131 elde edersiniz. Hatta yedek ald\u0131\u011f\u0131n\u0131z makinede bir sorun olu\u015fmas\u0131 durumunu da g\u00f6z \u00f6n\u00fcnde bulundurarak birka\u00e7 farkl\u0131 makinede yedek almak en g\u00fcvenilir y\u00f6ntemdir.<\/p>\r\n\r\n\r\n\r\n<h3 id=\"bilincli-kullanici-olun\" class=\"wp-block-heading\">Bilin\u00e7li Kullan\u0131c\u0131 Olun<\/h3>\r\n\r\n\r\n\r\n<p>\u0130nternet \u00fczerindeki riskleri bilmek, tehditlerden haberdar olmak sizi daha bilin\u00e7li kullan\u0131c\u0131lar haline getirir.\u00a0 Zararl\u0131 yaz\u0131l\u0131mlar hakk\u0131nda bilgi sahibi olmak, hackerlar\u0131n hangi metotlar\u0131 kullanarak insanlar\u0131 manip\u00fcle etti\u011fini bilmek bu metotlardan korunman\u0131n ilk ad\u0131mlar\u0131ndan biridir.\u00a0 Siber g\u00fcvenlik a\u00e7\u0131s\u0131ndan s\u00fcrekli e\u011fitimler almak mevcut y\u00f6ntemler hakk\u0131nda ara\u015ft\u0131rmalar yapmak sizi daha iyi korunan kullan\u0131c\u0131lar haline getirir.<\/p>\r\n\r\n\r\n\r\n<p>\u0130nternette risk bar\u0131nd\u0131ran sitelere girmek, korsan yaz\u0131l\u0131m y\u00fcklemek, genel ve kolay hat\u0131rlanacak \u015fifreler kullanmak, siber g\u00fcvenlik a\u00e7\u0131s\u0131ndan yap\u0131lacak en b\u00fcy\u00fck hatalard\u0131r. Kamuya a\u00e7\u0131k bilgisayarlar kullan\u0131l\u0131rken \u00f6zel i\u015flemler yapmaman\u0131z,\u00a0 Keylogger (Klavye Dinleyen Programlar) tarz\u0131 yaz\u0131l\u0131mlar yoluyla \u015fifrelerinizin ele ge\u00e7irilmesinin \u00f6n\u00fcne ge\u00e7er. Bu makaleyi okuyan ve irdeleyen ki\u015filerin\u00a0 bu tehditlerden b\u00fcy\u00fck oranda\u00a0 korunaca\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcyoruz.\u00a0 Siz de bilin\u00e7li bir kullan\u0131c\u0131 olun ve bahsetti\u011fimiz \u00f6nlemleri alarak kendinizi b\u00fcy\u00fck oranda koruyun.<\/p>\r\n\r\n\r\n\r\n<h2 id=\"sonuc\" class=\"wp-block-heading\">Sonu\u00e7<\/h2>\r\n\r\n\r\n\r\n<p>Sonu\u00e7 olarak\u00a0 verdi\u011finiz hizmetler neticesinde\u00a0 m\u00fc\u015fterilerinize ait Kaydetti\u011finiz bilgiler, veri g\u00fcvenli\u011fi ve ki\u015fisel verileri Koruma Kanunu kapsam\u0131nda\u00a0 sizi de sorumlu hale getiriyor.\u00a0 Veritabanlar\u0131n\u0131z\u0131n k\u00f6t\u00fc niyetli ki\u015filerce elde edilmesi sizleri \u00e7ok zor durumda b\u0131rakabilir. <a href=\"https:\/\/kvkk.gov.tr\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">KVKK <\/a>kapsam\u0131nda olduk\u00e7a b\u00fcy\u00fck mebla\u011flarla cezaland\u0131r\u0131labilirsiniz. Bu sebeple sistemlerinizin Siber g\u00fcvenlik a\u00e7\u0131s\u0131ndan haz\u0131r hale getirilmesi ve g\u00fcncel tutulmas\u0131 tamamen sizin sorumlulu\u011funuzdad\u0131r.\u00a0 Bu sorumluluklar\u0131\u00a0 dikkate alarak gerekli yaz\u0131l\u0131mlar\u0131 ve ad\u0131mlar\u0131 atman\u0131z sizi b\u00fcy\u00fck oranda koruyacakt\u0131r.\u00a0 Alaca\u011f\u0131n\u0131z \u00f6nlemler ile ba\u015f\u0131n\u0131za k\u00f6t\u00fc bir olay gelmesi durumunda dahi alaca\u011f\u0131n\u0131z cezalar\u0131n daha d\u00fc\u015f\u00fck olmas\u0131n\u0131 sa\u011flayabilirsiniz. Herhangi bir siber su\u00e7a maruz kald\u0131\u011f\u0131n\u0131zda ise <a href=\"https:\/\/www.siberay.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Siberay<\/a> kurumuna ba\u015fvurup \u015fikayetinizi iletebilirsiniz.<\/p>\r\n","protected":false},"excerpt":{"rendered":"\u0130nsanlar\u0131n her t\u00fcrl\u00fc i\u015fini internet ve dijital ortamda yapt\u0131\u011f\u0131 bug\u00fcnlerde \u00f6nemi gitgide artan konulardan biri de Siber g\u00fcvenliktir.&hellip;\n","protected":false},"author":23,"featured_media":7737,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"footnotes":""},"categories":[349,22],"tags":[281],"class_list":{"0":"post-7736","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-guvenlik","8":"category-teknoloji","9":"tag-ssl","10":"cs-entry","11":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Siber G\u00fcvenlik Nedir? 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