XSS. Sanitising HTML is an extremely hard problem. The sanitize helper that ships with Rails is completely broken; Jacques Distler provides a better alternative.
Recent articles
- Designing agentic loops - 30th September 2025
- Claude Sonnet 4.5 is probably the "best coding model in the world" (at least for now) - 29th September 2025
- I think "agent" may finally have a widely enough agreed upon definition to be useful jargon now - 18th September 2025