I am an admin of a fairly popular fourm and I have been advised that a disgruntled former spammer/user, that has been recently banned for violating site rules, is planning to try and get my adsense account banned by him committing click fraud on my site? Shall I be worried about this? and whom shall I contact to notify of this threat I recieved? Thank you for your speedy resopnse as I am very concerned.
watch your adsense log closely and look if you are getting any constant clicks from any particular IP or anything that you think is a not regular with your adsense log. Immediagely report this to google and I hope they will let you know what should you do..
Contact Google Adsense Support Team about it, just to make sure they have their eyes opened about it.