Enter a reason for deleting this comment
Did you ever have to deal with click bombers on your site? Did your site/account get suspended from Adsense over the incident? And, how did you prove to Google that you were not at fault for the fraudulent clicks?
Check your statistics for days when you are getting clickbombed. There should be a common IP address on those days, meaning the click bomber will return on every day the incident happens. Then document and screenshot the event and report it to Google Adsense before they suspend your account. Be proactive about this situation, never wait.