First is it possible ??? Is it possible to create a stealth mode virus that is triggered automatically when a hacker tries to gain access to a system ? When this idea popped into mind I wasn't thinking of money, but needless to say such a 'counter hacker virus' would be worth a fortune - Assuming you could copyright or patent it. What you would need is some type of software, like 'Malware bytes', that is supposed to protect against hackers, with an ability to attack the attacker by tracing back the source of the attack and automatically sending a super virus to attack the hackers system. Would the hackers machine become vulnerable while in the act of hacking in? Might a super counter attack virus solve the current problem with the ransom ware attacks plaguing businesses in the US and elsewhere?