I was trying to find a crack for the app, Seer and made the mistake of running them withought a sandbox. The program ran a crypto miner which kept getting blocked by my firewall. But in the background my files were being renamed to .koom. Luckily I caught it as well as restored from backups within a hr. I only run simplewall and no AV so if I make a mistake like that I’m pretty screwed...
Tech ramblings of the (HR, Day,Week,Month)