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Security Bites 108: Understanding white listing
Date: 07/18/2008
To put it simply, the concept of "white listing" is to define a set of software, a set of vendors, and allow only those trusted applications or files from those vendors run on your machine. If a file or application is not approved, it will not run. This is the opposite of how we've blocked malware from our machines in the past. In 2007, Symantec detected over a one million viruses, with two-thirds created within the calendar year. Loading one million antivirus signatures or even a percentage of that if generic signatures are used is a pretty serious undertaking. The idea here is that maybe we should only be loading signature for the good files. So far the idea is only being implemented in the enterprise space. Still it's a interesting idea. On the desktop it's already being used to stop spam, so why not use white lists to block malware as well?  Massachusetts-based Bit9 has created one of the largest catalogs of "known good" and "known bad" applications. Its Global Software Registry (GSR) serves as the policy enforcement center for Bit9's enterprise offerings. Recently, desktop antivirus vendor Kaspersky announced a partnership with Bit9 that will allow it to use the GSR in its upcoming desktop products in 2009. This week on Security Bites CNET's Robert Vamosi talks with Tom Murphy, chief strategy officer for Bit9, about white listing and its potential for the future.
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