About

Bitcoin Security Watcher tracks security issues that could cost Bitcoin users money or put them at risk: wallet and hardware firmware bugs, node vulnerabilities, personal data leaks, and compromised software packages.

What counts as critical?

We publish signals that call for action or awareness today. Audience labels help readers tell whether an alert concerns them.

How it works

Alerts are published automatically. Code collects and deduplicates source reports; a language model assesses the signals. An incorrect assessment can reach the public feed.

See the projects and channels we monitor.

Where to read

English incident pages and RSS contain English artifacts when available. Earlier Russian alerts remain in the Russian feed. The @bitcoin21sec Telegram channel publishes in Russian.

Support

Security Watcher is a nonprofit 21ideas project. Server infrastructure, site maintenance, and model calls need funding. Support the project if you find it useful.

A 21ideas project. The site source code is public.