Tella is a mobile tool that protects journalists and human rights defenders facing repressive surveillance.

Tella is a mobile tool that protects journalists and human rights defenders facing repressive surveillance, including device searches/seizures, interception of/eavesdropping on sensitive communication, and attack against servers. Tella currently allows users to seamlessly hide and encrypt sensitive material in a secure container on their mobile device, and securely send this material to the servers of the organization or partner they’re working with.

A previous engagement with OTF entailed upgrading Tella security by 1) improving on-device encryption and camouflage to better protect users against physical repressive surveillance, 2) deploying Pluggable Transports to bypass censorship.

The most recent engagement aimed to improve the performance and maintainability of Tella on Android; achieve feature parity between iOS and Android for security and privacy features; and improve Tella’s security and privacy on Android, iOS, and Web.