A field note on writing useful security reports
How a report can make its observations, interpretation, and limits clear.
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Writing
Writeups, field notes and explanations from people working on LLM red teaming, open to review and discussion.
Learn In development
Learning
Structured, open-source material for learning LLM red teaming, from first prompts to full assessment pipelines. Free to read, nothing behind a paywall.
- Foundations: how models fail
- Practice: attacks, evals and reporting
- Pipelines: red teaming at scale
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Join us
Ask questions, compare notes and share what you find with others learning the same craft.
- Discord · pending
- Subreddit · pending
- Contributing
How Umbris works
Open by default
Every lesson, writeup and exercise is free to read and reuse.
Learn by doing
Material is built around hands-on practice, not slides.
Write it up
Findings become writing that others can check and build on.
Review together
The community reads, questions and improves each other's work.
Recent writing
All writingWhat makes a finding actionable?
Context and evidence can help a reader decide what to do next.
Learning by comparing notes
A short reflection on sharing explanations and reviewing them together.