A new e-mail based extortion attack threatens users of Google’s AdSense banner-ad program with creating online behavior that will warrant them an account suspension—perhaps a permanent one–from Google if they don’t pay the attackers in bitcoin. The scam—revealed in a post by security writer and researcher Brian Krebs on his blog KrebsOnSecurity—demands $5,000 worth of the cryptocurrency in return “for a promise not to flood the publisher’s ads with so much bot and junk traffic that Google’s automated anti-fraud systems suspend the user’s AdSense account,” Krebs wrote in a blog post.

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