CALLISTO

Callisto (also known as Project Callisto) is a San Francisco–based nonprofit that provides an encrypted, trauma-informed online platform (Callisto Vault) that lets survivors create timestamped records, use a cryptographic Matching System to detect serial perpetrators, and access confidential legal options counseling. Founded to give survivors a safer, privacy-preserving alternative to formal reporting, Callisto partners with colleges and community organizations to identify repeat offenders and support survivors' choices. As of fall 2023 the organization expanded access to every college in the U.S., and users from nearly every state have created accounts. In September 2024 Callisto announced a planned closure because of a funding crisis; a public and private fundraising effort in FY2025 raised substantial emergency support and allowed the organization to remain operational and prepare to expand services further.