Shane Mac
shanemac.bsky.social
Shane Mac
@shanemac.bsky.social
Fighting for more secure messaging that is decentralized. CEO Ephemera, developing XMTP.
@matthewdgreen.bsky.social shoot me a dm. Love to show you something for chat control
October 10, 2025 at 12:44 PM
New XMTP proposal to solve “Harvest now, Decrypt later” and our first phase of Quantum Protection

Thanks to Nick Molnar for focusing on solving the real problem at hand and ensuring @xmtp is a leader in building a secure and decentralized protocol for the future github.com/xmtp/libxmtp...
HNDL Quantum Protection · Issue #1809 · xmtp/libxmtp
The Problem In XMTP, all ciphertext is public. Messages are encrypted using well established algorithms: ED25519 for signatures X25519 for key agreement via DHKEM CHACHA20POLY1305 for symmetric enc...
github.com
March 29, 2025 at 8:13 PM
Thanks for this Chris! Shane from XMTP here, I'm curious if XMTP could be an option here? I'd love to know any reason why we couldn't use XMTP for this since I believe we deliver on all of the principles that you're looking for here and feel very aligned with that?
A Vision for End-to-End Encrypted Messaging on ATproto | chrisb | WhiteWind blog
A Vision for End-to-End Encrypted Messaging on ATproto End-to-end encrypted (E2EE) messaging built on ATproto could become the open, decentralized alternative to WhatsApp—free from lock-in, surveillance, and privacy compromises. To achieve this, we must design the messaging protocol with precision,...
whtwnd.com
March 27, 2025 at 8:42 PM
Reposted by Shane Mac
“… it should feel normal to feel safe.” — @shanemac.bsky.social

We’re designing for everyday, always-on privacy
March 11, 2025 at 5:52 PM
Reposted by Shane Mac
To build a new communication network that requires global trust, you have to open source everything. True security comes from transparency.

This is why XMTP's node software is open source—anyone can inspect, & verify every line of code. No more blind trust in a black box.
February 21, 2025 at 3:19 PM
This is such a huge problem with centralized platforms owning our communication and encryption.

Encryption isn't enough.

We are working hard to be able to help any developer, any network, any identity, have secure and decentralized DMs that are censorship-resistant.
The future of messaging is decentralized.

"Apple’s iCloud backups aren’t encrypted by default, but Advanced Data Protection option was added in 2022, and must be enabled manually... Apple is expected to simply stop offering ADP in the UK." - @dompreston.com

www.theverge.com/news/608145/...
Apple ordered to open encrypted user accounts globally to UK spying
The secret order would give the UK access to encrypted backups belonging to any user — not just Brits.
www.theverge.com
February 10, 2025 at 7:28 PM