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Session
PFS
Since Session lacks perfect-forward secrecy (PFS) and therefore does not rotate encryption keys, a compromised key can be used to decrypt every message in a chat. PFS is planned for Session V2.
File sharing
By default, attachments (images, audio, video, other files) are routed through centralized servers operated by an officially registered compliant company based in a hostile jurisdiction, rather than Session swarms. While file encryption and 3-hop routing persist, offloading attachments to these centralized servers weakens privacy and significantly increases exposure to "harvest now, decrypt later" threats.
Multi-account
Official Session apps don't support multiple accounts, so users are bound to one identity. This limitation can be circumvented by launching an app via command line with a custom account path:
session.AppImage --user-data-dir=/path/to/account/dir
Groups
Default Session group chats support up to 100 members max and don't provide an invite link, so each user should be added manually. For larger communities, it's necessary to host a Session Open Group Server (SOGS) which comes with an invite link that can be used to join the group chat.
Forum:
Session vs SimpleX: fuck the fluff (20+ comments) - A detailed analysis that points out flaws in both architectures and questions legitimacy of the Trails and Bits audit. The article was written in 2025, so a few things have changed since then, but core architectures largely remain the same. Later that year, Session published a V2 roadmap featuring PFS and PQC, but the project encountered serious financial issues in 2026, making the future uncertain.
Official:
The Future of Session - In 2026, Session's core team tried to raise $1 million to finish Session Pro, which was intended to provide sufficient revenue for the project to operate independently. The campaign only raised under $200K, forcing the team to scale back operations. Development is now being handled by a small team with significant assistance from AI.
Useful:
sessioncommunities.online - list of communities
sessioncommunities.info - list of communities
session.directory - list of communities
docs.getsession.org - how to host a Session community (SOGS)
Community:
Send a message to darkvegas to request an invite to our private Session group.