Rule #1 -- Always be backing up. Rule #2 -- Never download and execute binaries from the Internet if you can't track it to reputable source. Linux will not hel

Rule #1 -- Always be backing up. Rule #2 -- Never download and execute binaries from the Internet if you can't track it to reputable source. Linux will not help if you execute it. Rule #3 -- If you can't track it but need to run anyway, jail the heck out of it. Create a VM and run it inside, disabling also its ability to use network for anything else than reaching the Internet. Make sure it can't reach any other machine in your network or ports on your PC through loopback.