Symantec Web Gateway can block, monitor, ignore, or allow access to files and other sources of malware based on file's reputation. Insight is a Symantec technology that can flag probable malware not previously known to Symantec. Symantec gathers anonymous computer usage behavior from participating Symantec customers and malware based on file reputation. Symantec combines the aggregate usage behavior with other attributes, such as the file publisher and file uniqueness, to make a reputation score for a file. You can configure the policies that allow only content with a reputation score of safe. Or you can also block content with a reputation score of unsafe. You can also monitor Internet traffic and view the content reputation for monitored files in a report.
To employ Insight, you must enable it. Symantec Web Gateway processes Insight reputation-based security after antivirus scanning.
Insight only supports Microsoft Portable Executable (PE) files. PE files include, but are not limited to: .exe, .dll, .sys, .cpl, .ocx, .scr, .drv, and .tlb.