Hi there,

We have an Adsense account for 1.5 years and nothing happened until recently, our site has been attacked by auto-click bot since the beginning of February.
1/ Problem: We found out that many tier-3 countries suddenly had extremely high CTRs (increased by 300% to 4000%) in the attacking period. However, the numbers of United States - the country contributing the most traffic & revenue for us - plummeted: The CTR dropped by 50% and Ad Coverage dropped from 98% to 70%.
2/ Our measure: we have already blocked the ads from displaying in suspected countries.
3/ The result after 1 day: Ad coverage in US increased to 84% (still low), CTR increased by 10% (still very low when compared to the period before the auto-click attack)

4/ Ask for your opinion:
- Do you suggest any other ways to increase CTR and Ad Coverage for our main country - United States to make them equal to the before attacking period?
- Should we switch to new Adsense account instead this account?
- Or should we have to wait for another few days to get result?