On-demand scans with Sophos Anti-Virus could run slowly on computers with very large numbers of JPG or JPEG files.
JPG, JPEG and WMF extensions were added to the default list of executables scanned, as a result of the discovery of the Windows Metafile (WMF) vulnerability (see Microsoft Security Advisory 912840). This could affect scanning speed on computers with large collections of images.
You can exclude files with JPG and JPEG extensions from scanning, or scan collections of such files separately. If you do either, you must ensure that you have installed the patch referred to in Microsoft Security Advisory 912840.
Applies to the following Sophos product(s) and version(s) Sophos Endpoint Security and ControlSophos Anti-Virus for Windows 2000+
This will ensure that the scan takes place at the most convenient time, but it will slow the system at that time.
Note: The Microsoft patch will protect you against the Windows Metafile (WMF) vulnerability, but excluding JPG and JPEG file extensions from scanning could leave your computer open to any new exploit involving JPG and JPEG files.
Every comment submitted here is read (by a human) but we do not reply to specific technical questions. If you need technical support please post a question to our community. Alternatively for licensed products open a support ticket.