Article

Designing CAPTCHA Systems with Reinforcement Learning for Adaptive Defense

2026-04-16

Abstract excerpt

CAPTCHA systems remain a widely deployed defense against automated abuse, but advances in machine learning have reduced the effectiveness of traditional challenge-based designs and exposed limitations in proprietary risk-scoring systems. This paper presents an adaptive, reinforcement learning-based CAPTCHA defense framework for high-security web applications. The proposed system formulates bot detection as a parti...

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Literature Corpus work: 9db0eab0-dc4f-5ac1-8bb8-540d0fe94c6a
DOI: 10.20944/preprints202604.1178.v1

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