LLM-generated passwords seem strong but are insecure due to their predictable nature, as LLMs are designed to predict tokens, not create random characters. Users unknowingly use these weak passwords, mistaking them for secure options. Testing reveals that popular LLMs like GPT, Claude, and Gemini generate passwords with predictable patterns and low entropy, risking brute-force attacks. Recommendations include avoiding LLM-generated passwords and prioritizing secure password generation methods in coding contexts.
https://www.irregular.com/publications/vibe-password-generation