Rein Security

Rein Security Raises $25M Series A, Nine Months After an $8M Seed

The file looked routine: a PDF handed to an onboarding agent at a global enterprise. Buried in it was a prompt injection telling the agent to step outside its job. Rein Security says its software caught the out-of-role action and stopped it before any damage was done. That is the case behind Rein’s $25 million […]