August 13th, 2026

Claude Haiku still open to indirect prompt injection

Something to keep in mind for today if you use Claude to do web research:

A dark interface displays text about prompt injection, model training, and risks associated with web fetching on Claude Code.

Anthropic wrote about this here https://claude.com/blog/auto-mode-default-in-claude-code

Simon Willison on Haiku in WebFetch:

A dark interface displays text about prompt injection, model training, and risks associated with web fetching on Claude Code. — Source: @simonw on X