Earlier today, Apple announced that a new version of OS X, codenamed Mountain Lion, would be released in July 2012.
Sophos has been actively participating in the pre-release developer programs for this new OS version. While the product works well on the new platform, we have found that there are a few changes required to support Mountain Lion fully. These changes will be implemented in the July monthly release of Sophos Antivirus for Mac, which will be v8.0.5.
We fully expect this new version to be available in time for the release of Mountain Lion.
The most significant change is that the installer for the product will be signed by Apple. This will ensure compliance with the new Gatekeeper functionality, which requires that the digital signature for any software downloaded from the Internet is based on a certificate from Apple.
Unfortunately this process is not compatible with version 10.4 of OS X. Starting with v8.0.5 of Sophos Antivirus for Mac we will publish an installer specifically for this older platform alongside the signed installer for OS X 10.5 and above. Customers wishing to perform a new install of Sophos Antivirus onto the older platform will need to ensure they download the appropriate installer.
This will not affect automated updates to existing installations.
There are no plans to make v7.x of Sophos Antivirus for Mac compatible with Mountain Lion.
Regards
Richard Baldry
Product Manager
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