The Ethereum Foundation has established a post-quantum security team to address threats from quantum computing. Led by Thomas Coratger, the initiative includes a $1 million Poseidon Prize for enhancing a key hash function and aims to strengthen Ethereum's defenses against potential quantum attacks.

Signal has introduced the Sparse Post Quantum Ratchet (SPQR) to enhance the Signal Protocol's security against potential quantum computing threats, while preserving existing features like forward secrecy and post-compromise security. This new ratchet works alongside the existing Double Ratchet to ensure secure messaging that remains resilient even in the face of future quantum attacks. Users will experience no changes in their app, as the transition to this protocol will occur automatically.

AWS has integrated the ML-KEM post-quantum key encapsulation mechanism into its Key Management Service, Certificate Manager, and Secrets Manager to enhance TLS security against future quantum threats. While quantum computers do not currently pose a risk, implementing ML-KEM ensures protection against potential long-term vulnerabilities. Users can enable this feature with minimal performance impact by updating their client SDKs.