[IntelMiner]

They harassed the OPNsense team, registering a domain to besmirch them and then pretended to have nothing to do with it until ICANN got involved

Oh, and they knowingly shipped a broken and insecure Wireguard to their customers, and tried to use their FreeBSD commit status to force it upstream

[SpecialistK]

This is the most recent one I'm familiar with. Jason D even had to get involved and there was a lot of bad blood.