Over 900 servers were hacked thanks to Zimbra’s zero-day

Zimbra Collaboration Suite contained a zero-day vulnerability for over a month, giving hackers a real day in the field that resulted in nearly 900 servers (opens in a new tab) be hacked.

Kaspersky researchers noted a vulnerability reported on the Zimbra forum, after which all the Advanced Persistent Threat (APT) groups used it to take over countless servers.

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