On November 27, Vitalik Buterin stated in an article that end-to-end encrypted communication is crucial for privacy protection, emphasizing that the next key step in this field is to support permissionless account creation and metadata privacy. He mentioned that Session and SimpleX are making progress in these directions. He donated 128 ETH to each of them, while also pointing out that decentralization, metadata protection, multi-device support, and Sybil/DoS resistance remain challenges that require more developers to contribute to improving such privacy communication tools.