They are probably mining XMR
There's a LOT of places with crypto mining softwares installed without permission, like Schools, big companies, datacenters, research facilities etc
This is not good for our crypto world, it's illegal
Illegal and also
inevitable in the context of CPU mining. Botnets were mining Bitcoin in the early days too! The only reason they don't now is because of the progression of specialized/ASIC mining.
If Monero didn't implement regular hard forks to stave off ASIC mining, this phenomenon would be mitigated. I guess that's the price we pay for ASIC resistance!
