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Uğur Tekin

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Open access Sep 2026

BREAKING AND SECURING TEXT-BASED CAPTCHAS: AN EMPIRICAL STUDY ON BANKS' ONLINE AUTHENTICATION SYSTEMS

Digital transformation has made online banking services essential, increasing the need for strong security to protect sensitive user data. To distinguish human users from automated bots, banks often use CAPTCHA systems. This study evaluates the security of text-based CAPTCHAs used by Turkish banks in their online authe...

Onur Ceran, Mehmet Batuhan Özdaş, Uğur Tekin · 0 citations

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