Scaling security reviews at 1Password: Solving the context and nondeterminism problems

In our last post , we shared how we began to scale our security code review process with SAGE. We discussed how we gathered historical Product Security (ProdSec) review records to create a 1Password-specific ruleset, the three-stage Finder/Critic/Judge pipeline, and the limitations of our v1 implementation. Above all, human ProdSec reviewers still had to bring full context to the findings: where the trust boundaries lie, which directories are sensitive, and whether mitigations exist elsewhere in the codebase.