A 30 second search turned up this [1] from two days ago.

Prominent Anthropic employees keep claiming to have solved prompt injection [2] and quickly get proved wrong [3]. They've burned my goodwill on this front.

[1] https://www.reddit.com/r/ClaudeCode/comments/1xhqvzn/opus_55...

[2] https://x.com/bcherny/status/2086520950259118464

[3] https://embracethered.com/blog/posts/2026/breaking-claude-co...