Castle
Block bots & bad behavior
y-combinatorWinter 2016Developer ToolsSaaSCybersecurityFraud Detection🇺🇸 San Francisco20 peoplehiring
Johan Brissmyr, Sebastian Wallin · 2 co-founders
Profile coverage4 of 8 · missing Funding, Signals, Customers, Stack / tools · last run 8/11/2026
About
Instantly stop automated and human-originated account takeovers, fake accounts, and any behavior that violates your platform policies.