Blog

July 30, 2026

Post-quantum without a prekey server

Going post-quantum usually means parking one-time keys on a server. Our relay is forbidden from holding anything — so both phones derive the starting key instead. How YGOOW's X25519 + ML-KEM-768 hybrid works, and what it costs.

June 25, 2026

They broke the metadata, not the cipher: the Ricochet lesson

In 2024 German investigators deanonymised a Ricochet user without breaking Tor or the cipher — they timed the network and made the ISP name the subscriber. The reason it worked, and the one design choice that removes the anchor the attack needed.

June 25, 2026

They broke the content, not the cipher: the EncroChat lesson

In 2020 police read tens of thousands of EncroChat users' messages without breaking the encryption — they owned one central system and harvested everyone at once. Here is what actually happened, and the single architectural choice that turns that dragnet back into per-target work.

June 24, 2026

Encryption was the easy part

The cipher is the solved problem. The leaks live in the margins — the traffic a deaf relay still sees, and the phone someone can take from your hand. Two new defenses: shaped metadata, and a decoy profile for when you're forced to unlock.

June 20, 2026

Why YGOOW won't pick your security for you

Every other messenger chooses a default and hopes you never ask. YGOOW refuses: you pick how each conversation is protected, or you don't chat. Here is why that bluntness is the feature.

June 20, 2026

Five locks, and every one is your choice

A message in YGOOW passes through up to five independent layers — transport, Tor, the end-to-end channel, locked content, and a lifetime. What each one does, in plain terms, and why they are separate on purpose.

June 19, 2026

No oracle: why every locked message looks the same

A wrong key, a missing key, and a message that was never yours all produce the same locked block — no error, no hint, no oracle. How YGOOW's 'Variant C' trial-decryption works, and where it ends.

June 19, 2026

Building YGOOW in the open

Why a twenty-year-old idea — anonymous, account-free data sharing — is finally shipping as an encrypted messenger.

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