>>1226367I am not an expert in operational security, so I don't have anything specific to recommend beyond getting a paid VPN to hide your internet traffic, but that definitely won't be enough, depending on how dirty said company is willing to play. It's possible your house may be bugged, either now or in the future.
What I *can* tell you is to look at what other people in similar positions have to do to keep themselves safe. Women who are harassed by technically-savvy ex-boyfriends. Journalists writing about sensitive state-secret topics under repressive regimes. Professional spies hiding their own tracks. Professional hackers hiding their own digital tracks.
At the same time, you should be playing a mini-game in your own head where you ask yourself: if I were said monolithic publicly-traded company, what would I want to know about this person? What more would I want to find out? Am I just looking for anything illegal to get this person in trouble, or am I trying to find out specific pieces of information (passwords, documents, etc)? Do research to figure out how those in the driver's seat of such covert offensives work their magic.
Trying to do both perspectives on your own is a bit of a doozy, so you should prioritize finding online communities that specialize in this sort of stuff. They'll be able to give you more specific answers.
Good luck anon. Unless you're q-anon in which case fuck you.