We recently took over a few sites from another company, and a few days later, the dreaded Ã¢â‚¬Å“This site may harm your computerÃ¢â‚¬ appeared in Google. Not the best start to a campaign.
If your site is hacked, your supposed to submit a review in webmaster tools, which I always thought should be a bit unnecessary.
Anyway, we cleaned up the code immediately (or rather got the web dev company we took over from to do it), and WITHOUT submitting the site for review, Google removed the malware notice.
If I was hacked, I’d probably jump immediately to rectify it. But it’s good to know these malware notices can be removed without notice as quickly as they appeared (although I’m not certain if this is A) widespread and B) if Google wants folks to know this).
John Mueller, a Webmaster Trends Analyst at Google, was kind enough to confirm Google will rescan your website without prompt in the comments below:
We generally rescan them from time to time, but itÃ¢â‚¬â„¢s certainly faster if you can tell us when to check