The Future of Secure Messaging: Why Decentralization Matters

While mainstream encrypted messengers like WhatsApp offer end-to-end encryption (E2EE), they still rely on centralized servers and collect significant metadata, prompting figures like Vitalik Buterin to advocate for decentralized alternatives. Session is highlighted as an example, using public key identities instead of phone numbers and routing traffic through onion paths via service nodes to minimize metadata exposure. However, Session presents privacy trade-offs: 'Fast Mode' notifications expose IP addresses to push notification services, and voice/video calls currently use WebRTC, which can leak IP information. Furthermore, while Session is moving toward quantum resistance with Protocol v2, it is not strictly quantum-safe yet. The project's stewardship recently moved from Australia's OPTF to Switzerland's STF, which maintains transparency reports on government requests, constrained by the decentralized, E2EE nature of the system. Ultimately, decentralization offers permissionless accounts and better metadata protection, but users must still manage local storage risks and choose between privacy (Slow Mode) and instant notifications (Fast Mode).

(Source：Cointelegraph)