CAPTCHA systems serve as a primary line of defense for websites looking to distinguish between human users and automated bots. While effective in secu...

CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart) have become a standard security feature on websites across the i...

Have you ever tried deleting a contact on your Android phone, only to be met with the dreaded message: “Cannot delete read-only contact”? ...