The firewall alert or any activity log should show him information on who's behind the intrusion attacks. It should show the IP address or computer name. There he can start investigating who owns that IP address.
A 85 year old ex-chief of police has Norton System Works installed on his system. He obviously doesn't know how to interpret or control the many function of that software. He keeps getting intrusion messages from Norton and insists that I am the one behind it.
He dated my mom for four years and they are broke up now and he blames it on me. How can I prove that I am not the one invading his system?