New Wave of Attack Campaign Targeting Zimbra Email Users for Credential Theft

A new “mass-spreading” social engineering campaign is targeting users of the Zimbra Collaboration email server with an aim to collect their login credentials for use in follow-on operations.
The activity, active since April 2023 and still ongoing, targets a wide range of small and medium businesses and governmental entities, most of which are located in Poland, Ecuador, Mexico, Italy, and Russia