Alex Chebaturkin
Security infrastructure — identity, authorization, and privileged access at scale.
I build the security infrastructure that governs privileged access at cloud scale — certificate authorities, authorization control planes, and the proxies and agents that sit between an operator and a production host.
These are notes on the parts that are hard: not how the protocols work, but what breaks when you run them across fifty regions, and what it costs the people who have to use them.
Writing
- 2026-09-06
SSH certificate authority at scale
How short-lived OpenSSH certificates change authentication, authorization, revocation, and operations at fleet scale.