• PC World, Thursday, March 19, 2015 5:23 PM

Mandrill, a transactional email service available to small businesses through MailChimp, has issued a warning to customers that some of its email data could have been exposed in a bonnet attack. According to Mandrill, the company experienced an attack after changing its firewall and the attackers tried to lasso some of Mandrill's servers into a bonnet. The Rocket Science Group, Mandrill's parent company, has not identified any evidence of stolen data but said that internal logs such as emails sent, sender and recipient addresses could have been exposed. However, custom metadata and message content is not at risk.

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