{"id":17350,"date":"2026-02-18T08:30:21","date_gmt":"2026-02-18T05:30:21","guid":{"rendered":"https:\/\/blog.sh.com.tr\/?p=17350"},"modified":"2026-02-18T09:05:06","modified_gmt":"2026-02-18T06:05:06","slug":"cevrimici-guvenlik-icin-en-sik-yapilan-5-hata","status":"publish","type":"post","link":"https:\/\/sh.com.tr\/blog\/cevrimici-guvenlik-icin-en-sik-yapilan-5-hata\/","title":{"rendered":"\u00c7evrimi\u00e7i G\u00fcvenlik \u0130\u00e7in En S\u0131k Yap\u0131lan 5 Hata"},"content":{"rendered":"

Dijital d\u00fcnyada her g\u00fcn milyarlarca kullan\u0131c\u0131 internete ba\u011flan\u0131yor, sosyal medya hesaplar\u0131n\u0131 kullan\u0131yor, e-posta g\u00f6nderiyor veya \u00e7evrim i\u00e7i al\u0131\u015fveri\u015f yap\u0131yor. Ancak bu kadar yayg\u0131n kullan\u0131m beraberinde ciddi siber g\u00fcvenlik riskleri<\/strong> getiriyor.
Bir\u00e7ok kullan\u0131c\u0131, fark\u0131nda olmadan ki\u015fisel verilerini<\/strong>, \u015fifrelerini<\/strong> veya cihazlar\u0131n\u0131<\/strong> tehlikeye at\u0131yor.<\/p>\n

Bu yaz\u0131da, \u00e7evrimi\u00e7i ortamda kullan\u0131c\u0131lar\u0131n en s\u0131k yapt\u0131\u011f\u0131 5 temel g\u00fcvenlik hatas\u0131n\u0131 ve bu hatalardan nas\u0131l ka\u00e7\u0131n\u0131labilece\u011fini ele alaca\u011f\u0131z.
Bu hatalar\u0131 anlamak, hem bireysel kullan\u0131c\u0131lar hem de i\u015fletmeler i\u00e7in dijital g\u00fcvenli\u011fi art\u0131rman\u0131n ilk ad\u0131m\u0131d\u0131r.<\/p>\n

1. Zay\u0131f ve Tekrarlanan \u015eifreler Kullanmak<\/strong><\/h3>\n

\u00c7evrimi\u00e7i g\u00fcvenli\u011fin en b\u00fcy\u00fck zafiyetlerinden biri, h\u00e2l\u00e2 zay\u0131f \u015fifre kullan\u0131m\u0131d\u0131r.<\/strong>
Pek \u00e7ok kullan\u0131c\u0131 \u201c123456\u201d, \u201cpassword\u201d veya do\u011fum tarihi gibi kolay tahmin edilebilen \u015fifreler belirlemektedir. Bu t\u00fcr \u015fifreler, siber sald\u0131rganlar i\u00e7in adeta a\u00e7\u0131k kap\u0131 b\u0131rakmak anlam\u0131na gelir.<\/p>\n

Neden Tehlikeli?<\/strong>
Zay\u0131f \u015fifreler, brute-force (kaba kuvvet) sald\u0131r\u0131lar\u0131na kar\u015f\u0131 savunmas\u0131zd\u0131r. Ayr\u0131ca, ayn\u0131 \u015fifreyi birden fazla platformda kullanmak da riski katlar. \u00c7\u00fcnk\u00fc bir hesap ele ge\u00e7irildi\u011finde, di\u011fer t\u00fcm hesaplar da tehlikeye girebilir.<\/p>\n

Do\u011fru Yakla\u015f\u0131m:<\/strong><\/p>\n

    \n
  • \n

    G\u00fc\u00e7l\u00fc \u015fifreler<\/strong> olu\u015fturun: En az 12 karakter, b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf, say\u0131 ve \u00f6zel karakter kombinasyonu kullan\u0131n.<\/p>\n<\/li>\n

  • \n

    Her platform i\u00e7in farkl\u0131 \u015fifre<\/strong> belirleyin.<\/p>\n<\/li>\n

  • \n

    \u015eifre y\u00f6neticisi uygulamalar\u0131<\/strong> (\u00f6r. Bitwarden, 1Password, LastPass) kullanarak t\u00fcm parolalar\u0131n\u0131z\u0131 g\u00fcvenle saklay\u0131n.<\/p>\n<\/li>\n

  • \n

    \u0130ki a\u015famal\u0131 do\u011frulama (2FA)<\/strong> etkinle\u015ftirin. Bu \u00f6zellik, \u015fifreniz \u00e7al\u0131nsa bile hesab\u0131n\u0131z\u0131 koruyabilir.<\/p>\n<\/li>\n<\/ul>\n

    \ud83d\udd12 K\u0131sacas\u0131:<\/strong> Tek bir zay\u0131f \u015fifre, t\u00fcm dijital kimli\u011finizi riske atabilir. \u015eifre g\u00fcvenli\u011fi, \u00e7evrimi\u00e7i koruman\u0131n temel ta\u015f\u0131d\u0131r.<\/p>\n

    2. \u015e\u00fcpheli Ba\u011flant\u0131lara T\u0131klamak ve Kimlik Av\u0131 (Phishing) Tuzaklar\u0131na D\u00fc\u015fmek<\/strong><\/h3>\n

    Siber sald\u0131r\u0131lar\u0131n b\u00fcy\u00fck bir k\u0131sm\u0131 phishing (kimlik av\u0131)<\/strong> y\u00f6ntemleriyle yap\u0131l\u0131r.
    Bu t\u00fcr sald\u0131r\u0131larda kullan\u0131c\u0131ya sahte e-postalar, mesajlar veya reklamlar g\u00f6nderilir. Kullan\u0131c\u0131dan bir ba\u011flant\u0131ya t\u0131klamas\u0131, bilgi girmesi veya dosya indirmesi istenir.<\/p>\n

    Neden Tehlikeli?<\/strong>
    Phishing ba\u011flant\u0131lar\u0131 genellikle sizi ger\u00e7ek sitelere benzeyen sahte sayfalara y\u00f6nlendirir. Bu sayfalarda payla\u015f\u0131lan bilgiler (kredi kart\u0131, kullan\u0131c\u0131 ad\u0131, \u015fifre) do\u011frudan sald\u0131rganlar\u0131n eline ge\u00e7er.<\/p>\n

    Phishing e-postalar\u0131n\u0131n ortak \u00f6zellikleri:<\/strong><\/p>\n

      \n
    • \n

      \u201cHesab\u0131n\u0131z ask\u0131ya al\u0131nacak!\u201d, \u201c\u00d6deme ba\u015far\u0131s\u0131z oldu\u201d gibi panik yaratan ifadeler i\u00e7erir.<\/p>\n<\/li>\n

    • \n

      G\u00f6nderen adresi genellikle sahte veya benzer bir uzant\u0131ya sahiptir (\u00f6rnek: support@g00gle.com).<\/p>\n<\/li>\n

    • \n

      Yaz\u0131m hatalar\u0131 veya anormal link adresleri bulunur.<\/p>\n<\/li>\n<\/ul>\n

      Do\u011fru Yakla\u015f\u0131m:<\/strong><\/p>\n

        \n
      • \n

        \u015e\u00fcpheli e-postalardaki ba\u011flant\u0131lara t\u0131klamay\u0131n.<\/p>\n<\/li>\n

      • \n

        G\u00f6nderici adresini her zaman kontrol edin.<\/p>\n<\/li>\n

      • \n

        Kurumsal hesaplara giri\u015f yaparken do\u011frudan resm\u00ee web sitesini manuel olarak a\u00e7\u0131n.<\/strong><\/p>\n<\/li>\n

      • \n

        E-posta g\u00fcvenli\u011fi i\u00e7in SPF, DKIM ve DMARC<\/strong> kay\u0131tlar\u0131n\u0131 aktif hale getirin (\u00f6zellikle kurumsal kullan\u0131c\u0131lar i\u00e7in).<\/p>\n<\/li>\n<\/ul>\n

        \ud83d\udce7 Unutmay\u0131n:<\/strong> Ger\u00e7ek \u015firketler sizden asla e-posta yoluyla \u015fifre veya kredi kart\u0131 bilgisi istemez.<\/p>\n

        3. Yaz\u0131l\u0131m G\u00fcncellemelerini Ertelemek veya \u0130hmal Etmek<\/strong><\/h3>\n

        Kullan\u0131c\u0131lar\u0131n s\u0131kl\u0131kla yapt\u0131\u011f\u0131 bir di\u011fer hata, sistem veya uygulama g\u00fcncellemelerini ertelemektir.
        \u201cSonra hat\u0131rlat\u201d butonuna defalarca basmak, asl\u0131nda siber sald\u0131rganlara davetiye \u00e7\u0131karmak anlam\u0131na gelir.<\/p>\n

        Neden Tehlikeli?<\/strong>
        Eski yaz\u0131l\u0131mlar, bilinen g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 i\u00e7erir. Sald\u0131rganlar bu a\u00e7\u0131klar\u0131 kullanarak sisteme s\u0131zabilir, zararl\u0131 yaz\u0131l\u0131mlar y\u00fckleyebilir veya verilerinizi ele ge\u00e7irebilir.<\/p>\n

        Do\u011fru Yakla\u015f\u0131m:<\/strong><\/p>\n

          \n
        • \n

          T\u00fcm cihazlar\u0131n\u0131zda otomatik g\u00fcncellemeleri<\/strong> aktif edin.<\/p>\n<\/li>\n

        • \n

          \u00d6zellikle i\u015fletim sistemi, taray\u0131c\u0131 ve antivir\u00fcs programlar\u0131n\u0131 d\u00fczenli olarak g\u00fcncelleyin.<\/p>\n<\/li>\n

        • \n

          Kulland\u0131\u011f\u0131n\u0131z eklenti, tema veya uygulamalar\u0131n orijinal ve g\u00fcncel<\/strong> oldu\u011fundan emin olun.<\/p>\n<\/li>\n

        • \n

          \u0130\u015fletmeler, yaz\u0131l\u0131m envanteri y\u00f6netimi<\/strong> sistemleri kurarak g\u00fcvenlik yamalar\u0131n\u0131 merkezi olarak takip etmelidir.<\/p>\n<\/li>\n<\/ul>\n

          \ud83d\udee0\ufe0f \u00d6zetle:<\/strong> \u201cG\u00fcncellemeleri sonra yapar\u0131m\u201d demek, siber su\u00e7lulara kap\u0131y\u0131 aral\u0131k b\u0131rakmak demektir.<\/p>\n

          4. Her Cihaz\u0131 G\u00fcvenli Sanmak ve Ortak A\u011flar\u0131 Dikkate Almamak<\/strong><\/h3>\n

          Kafe, havaalan\u0131 veya otellerde kullan\u0131lan a\u00e7\u0131k Wi-Fi a\u011flar\u0131<\/strong>, siber sald\u0131r\u0131lar i\u00e7in en riskli ortamlardan biridir.
          Bir\u00e7ok kullan\u0131c\u0131, bu a\u011flarda ki\u015fisel e-postalar\u0131na, banka hesaplar\u0131na veya \u015firket sistemlerine giri\u015f yapar.<\/p>\n

          Neden Tehlikeli?<\/strong>
          A\u00e7\u0131k a\u011flarda veri trafi\u011fi \u015fifrelenmezse, sald\u0131rganlar \u201cman-in-the-middle\u201d y\u00f6ntemiyle g\u00f6nderilen bilgileri kolayca ele ge\u00e7irebilir.
          \u00d6zellikle \u015fifrelenmemi\u015f HTTP sitelerine giri\u015f yapmak ciddi risk ta\u015f\u0131r.<\/p>\n

          Do\u011fru Yakla\u015f\u0131m:<\/strong><\/p>\n

            \n
          • \n

            Ortak a\u011flarda VPN<\/strong> kullan\u0131n. Bu, veri trafi\u011finizi \u015fifreler.<\/p>\n<\/li>\n

          • \n

            Halka a\u00e7\u0131k Wi-Fi a\u011flar\u0131nda<\/strong> finansal i\u015flemler yapmaktan ka\u00e7\u0131n\u0131n.<\/p>\n<\/li>\n

          • \n

            Her ba\u011flant\u0131da taray\u0131c\u0131 adres \u00e7ubu\u011funda HTTPS<\/strong> ibaresinin bulundu\u011funa dikkat edin.<\/p>\n<\/li>\n

          • \n

            Gerekirse ki\u015fisel hotspot<\/strong> \u00fczerinden ba\u011flan\u0131n.<\/p>\n<\/li>\n<\/ul>\n

            \ud83c\udf10 Basit bir kural:<\/strong> Ortak Wi-Fi ne kadar kolay eri\u015filebiliyorsa, o kadar risklidir.<\/p>\n

            5. G\u00fcvenli Yedekleme Almay\u0131 Unutmak<\/strong><\/h3>\n

            Veri kayb\u0131 yaln\u0131zca sald\u0131r\u0131lardan de\u011fil, donan\u0131m ar\u0131zalar\u0131ndan, kullan\u0131c\u0131 hatalar\u0131ndan veya fidye yaz\u0131l\u0131mlar\u0131ndan da kaynaklanabilir.
            Ne yaz\u0131k ki \u00e7o\u011fu kullan\u0131c\u0131, bu riski fark etti\u011finde art\u0131k \u00e7ok ge\u00e7 kalm\u0131\u015ft\u0131r.<\/p>\n

            Neden Tehlikeli?<\/strong>
            Yedekleme yap\u0131lmad\u0131\u011f\u0131nda veri kayb\u0131 kal\u0131c\u0131 hale gelir. Fidye yaz\u0131l\u0131m\u0131 sald\u0131r\u0131lar\u0131nda ise dosyalar\u0131n\u0131z \u015fifrelenebilir ve geri almak i\u00e7in b\u00fcy\u00fck miktarda \u00f6deme talep edilir.<\/p>\n

            Do\u011fru Yakla\u015f\u0131m:<\/strong><\/p>\n

              \n
            • \n

              \u00d6nemli verilerinizi d\u00fczenli olarak harici disk<\/strong> veya bulut sistemlerinde<\/strong> yedekleyin.<\/p>\n<\/li>\n

            • \n

              3-2-1 yedekleme kural\u0131n\u0131<\/strong> uygulay\u0131n: 3 kopya, 2 farkl\u0131 ortam, 1 tanesi \u00e7evrimd\u0131\u015f\u0131.<\/p>\n<\/li>\n

            • \n

              Bulut yedekleme i\u00e7in Google Drive, Dropbox, iCloud<\/strong> gibi g\u00fcvenilir servisleri tercih edin.<\/p>\n<\/li>\n

            • \n

              \u015eirketler, otomatik yedekleme plan\u0131<\/strong> olu\u015fturmal\u0131 ve test geri y\u00fckleme senaryolar\u0131 y\u00fcr\u00fctmelidir.<\/p>\n<\/li>\n<\/ul>\n

              \ud83d\udcbe Unutmay\u0131n:<\/strong> Yedek al\u0131nmayan veri, asl\u0131nda kaybedilmeye haz\u0131r veridir.<\/p>\n

              Sosyal M\u00fchendislik Sald\u0131r\u0131lar\u0131na Dikkat Edin<\/strong><\/h3>\n

              Siber sald\u0131rganlar yaln\u0131zca teknik a\u00e7\u0131klar\u0131 de\u011fil, insan zaaflar\u0131n\u0131<\/strong> da hedef al\u0131r.
              Kendini \u201cbanka temsilcisi\u201d veya \u201cIT destek uzman\u0131\u201d olarak tan\u0131tan ki\u015filere g\u00fcvenmek, b\u00fcy\u00fck veri s\u0131z\u0131nt\u0131lar\u0131na yol a\u00e7abilir.<\/p>\n

              Telefonla, e-posta ile veya mesaj yoluyla gelen kimlik taleplerine asla yan\u0131t vermeyin<\/strong>.
              Kurumsal do\u011frulama mekanizmalar\u0131 \u00fczerinden bilgi payla\u015f\u0131n.<\/p>\n

              Dijital G\u00fcvenlik K\u00fclt\u00fcr\u00fc, Bilin\u00e7le Ba\u015flar<\/strong><\/h3>\n

              \u00c7evrimi\u00e7i ortamda g\u00fcvenlik, yaln\u0131zca yaz\u0131l\u0131mlarla de\u011fil, kullan\u0131c\u0131 fark\u0131ndal\u0131\u011f\u0131yla<\/strong> sa\u011flan\u0131r.
              Bu 5 hatadan ka\u00e7\u0131nmak, dijital kimli\u011finizi koruman\u0131n en etkili yoludur.<\/p>\n

              Unutmay\u0131n:<\/p>\n

                \n
              • \n

                G\u00fc\u00e7l\u00fc \u015fifre olu\u015fturmak,<\/p>\n<\/li>\n

              • \n

                Phishing e-postalar\u0131na dikkat etmek,<\/p>\n<\/li>\n

              • \n

                G\u00fcncellemeleri ihmal etmemek,<\/p>\n<\/li>\n

              • \n

                Ortak a\u011flarda dikkatli davranmak,<\/p>\n<\/li>\n

              • \n

                Ve d\u00fczenli yedekleme yapmak,<\/p>\n<\/li>\n<\/ul>\n

                Her biri sizi \u00e7evrimi\u00e7i tehditlerden koruyacak g\u00fc\u00e7l\u00fc bir dijital kalkan olu\u015fturur.<\/p>\n","protected":false},"excerpt":{"rendered":"

                Dijital d\u00fcnyada her g\u00fcn milyarlarca kullan\u0131c\u0131 internete ba\u011flan\u0131yor, sosyal medya hesaplar\u0131n\u0131 kullan\u0131yor, e-posta g\u00f6nderiyor veya \u00e7evrim i\u00e7i al\u0131\u015fveri\u015f yap\u0131yor. Ancak bu kadar yayg\u0131n kullan\u0131m beraberinde ciddi siber g\u00fcvenlik riskleri getiriyor.Bir\u00e7ok kullan\u0131c\u0131, fark\u0131nda olmadan ki\u015fisel verilerini, \u015fifrelerini veya cihazlar\u0131n\u0131 tehlikeye at\u0131yor. Bu yaz\u0131da, \u00e7evrimi\u00e7i ortamda kullan\u0131c\u0131lar\u0131n en s\u0131k yapt\u0131\u011f\u0131 5 temel g\u00fcvenlik hatas\u0131n\u0131 ve bu hatalardan […]<\/p>\n","protected":false},"author":7,"featured_media":17351,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[2139,2140,2141],"class_list":["post-17350","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bilgi-bankasi","tag-cevrimici-guvenlik","tag-internet-guvenligi-hatalari","tag-sifre-guvenligi"],"_links":{"self":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts\/17350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=17350"}],"version-history":[{"count":1,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts\/17350\/revisions"}],"predecessor-version":[{"id":17553,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts\/17350\/revisions\/17553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/media\/17351"}],"wp:attachment":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=17350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=17350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=17350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}