It's been extremely hard to keep this one under wraps.

I just published a new blog post, where one weird string that looks like a cookie value turned out to be a whole cryptostealer and database wiping operation.

https://www.labs.greynoise.io/grimoire/2026-02-24-whats-that-string/

I spent some late nights on this one, and am a little bit ridiculously proud of the work I did.