Evolution of Captchas – Deep Captcha

Abstract

Attacks on websites will become more common as
machine learning technology progresses. With the
development of protection mechanisms, the assaulting
tactic changes. Prevention strategies must be updated on a
regular basis. In this case, adversarial instances are
presented, which are difficult to break. The immutable
adversarial images were employed here, as well as an
unplanned pool of photos.