"This included PII, entire poems, “cryptographically-random identifiers” like Bitcoin addresses, passages from copyrighted scientific research papers, website addresses, and much more."
https://www.404media.co/google-researchers-attack-convinces-...
https://www.404media.co/google-researchers-attack-convinces-...
Spitting out content that looks legit is one thing, but spitting out text that matches something online exactly is more suspicious.