The best Crypto Security newsletters

SEAL's Radar is a weekly-style security briefing covering crypto threats, including social engineering, malicious exploit code, phishing domains, DPRK-linked intrusions and aggregate incident statistics. It gives readers advisories on active attacks, indicators of compromise to watch for, and updates on SEAL's own work and initiatives.

A company blog from a ZK-powered crypto exchange infrastructure provider, covering crypto security, exchange architecture and white-label exchange business cases. Readers get explanatory posts that mix industry topics with product positioning for KalqiX.

Bitcoin Train is an Italian newsletter explaining bitcoin through current events, covering security incidents, regulation like MiCA, and index-provider decisions affecting bitcoin treasury companies. Many issues carry sponsored content for the Debifi bitcoin lending platform, which is presented promotionally.

A company blog from Tenderly, a transaction simulation platform for blockchain developers, featuring customer case studies and essays on onchain infrastructure decisions. Readers get examples of how crypto products use simulation for security and user trust, plus perspective on chain selection and risk.