Signal Introduces New Post-Quantum Cryptographic Defense To Secure Messaging Against Future Quantum Threats

Signal, the widely used encrypted messaging platform, has unveiled a major step forward in safeguarding communications against the looming threat of quantum computing. The non-profit Signal Foundation announced the deployment of Sparse Post-Quantum Ratchet (SPQR), a new cryptographic system designed to ensure long-term privacy in a world where quantum computers may render traditional encryption obsolete.