Kirill Abramov's personal blog

Founder & CEO, UmbrellaX LLP

This is where I write about end-to-end encryption, post-quantum cryptography, jurisdictional risk, and the design decisions behind UmbrellaX. Personal opinions, not press releases.

More about me

News

The interface works as an article catalog. Each card gives a compact preview and opens a full standalone article page.

Abstract cipher glyphs on a black background, evoking encrypted text.

Encryption

End-to-end encryption explained: what it is, what it is not, and how UmbrellaX implements it

A byte-level explainer of end-to-end encryption. What E2EE protects, what it does not, which protocols matter in 2026, and how UmbrellaX uses MLS plus post-quantum hardening.

Apr 29 pillar 5 min