You will not notice good cyber-attack, it is completely stealth. Control over machine has a value, so attacker may even patch security holes (to prevent other a

You will not notice good cyber-attack, it is completely stealth. Control over machine has a value, so attacker may even patch security holes (to prevent other attacks), and remove other malware! There is a story from early 2000s, when some guy from East Europe did network administration, in exchange for fast connectivity and warez hosting. "Customers" had no idea, and he kept their servers running for a few years longer.