Any idea what they mean? I don't think I have violated any TOS nor done any click fraud. While going through our records recently, we found that your AdSense account has posed a significant risk to our AdWords advertisers. Since keeping your account in our publisher network may financially damage our advertisers in the future, we've decided to disable your account. Please understand that we consider this a necessary step to protect the interests of both our advertisers and our other AdSense publishers. We realize the inconvenience this may cause you, and we thank you in advance for your understanding and cooperation.
This is general email that adsense sends to remove a publisher. You can find similar threads here on DP. Did you by any chance click the ads displayed on your website? Did you see any increase in the click through in recent days.!! I would write them to ask for more explanation but don't expect a timely answer (or no answer at all)
No Increase in any clicks. I have a CTR of around 2% and it has been the same for almost the last 3 months. Never clicked on my Ads. I even go to the extent of turning adsense off while I am updating my site to be on a safer side. Sent them a mail . Got to see what their response will be.