As an avid pirate #2 and #3 are the only concerns for me, #1 ain't cause for concern as long as you don't digitize your nude form... and all my webcams are physically covered
As for number #2 you have to do your transactions in a protected browser. Eg: Eset secure browser. Guaranteed to confuse keyloggers, if one gets through the security program, which is an extended trial. A real pirate doesn't even pay for his security program

Plus OTP verification.
#3 is easy as long as you know your system. For instance I know my cooling fans aren't supposed to go above 2000-2200rpm and CPU/GPU temps should stay below 45C degrees unless there's a resource-hogging application running.
These are the sacrifices you have to make for being a pestilent, dishonest, cow hearted yeasty codpiece of a pirate