"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
By default, PureMessage for Windows/Exchange scans for viruses inside archive files. The archive types scanned include ZIP, ARJ, RAR, GZIP, TAR and CMZ.
This option can be deselected (e.g. if you prefer to have archive files scanned by anti-virus software at the desktop).
To enable (or disable) archive scanning, do as follows.
Once archive scanning has been enabled, individual archive types can be treated separately with the threat reduction options. For details of how to select archive types, and the options available, see the threat reduction by file type article.
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