You may want to enable WildFire by configuring a forward action on a File-Blocking profile. Wildfire runs the executable in a sandbox environment and checks its behavior to see if it is malicious. If so, signatures are automatically generated within an hour with the subscription service. This also feeds into the PAN-DB URL filtering database malware category, so you may also want to block those types of web sites, too. Also, a Continue action on executable (PE or "portable executable") file downloads can help so the user has to specifically click "Continue" to download the file. This is called drive-by-download protection. You can customize the response page to show a warning for these types of files to discourage users from clicking continue. Both options can be combined, as well. Cheers, Kelly
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