Bit9 FileAdvisor(TM) Draws More Than 120,000 Unique Visitors from 68 Countries in First Six Weeks of Service; Database of Executable Files Grows to 5 Terabytes; Free Service Identifies Unknown Files, Transforming the Way You Deal with New Software.

CAMBRIDGE, Mass. -- Bit9, Inc., which solves the problem of unwanted software at the endpoint, today disclosed the results of the first six weeks of its new FileAdvisor service (http://fileadvisor.bit9.com). Bit9 FileAdvisor is the first free search engine for identifying software files on any Windows(R) computer. In the first six weeks, more than 120,000 unique visitors from 68 countries used FileAdvisor to find information about unknown software on their PCs.

Top Ten Searched File Names as of 5/1/06:

File Name         What It Is                             Who Ships It

1) ntdetect.com   Standard Windows Component             Microsoft

2) svchost.exe    Generic Host Process for  Win32
                   Services
                  (Standard Windows Component)           Microsoft

3) alg.exe        Application Layer Gateway Service
                  (Standard Windows Component)           Microsoft

4) jusched.exe    Java 2 Platform Standard Edition       Various
                   binary                                Vendors

5) lsass.exe      LSA Executable and Server DLL
                  (Standard Windows Component)           Microsoft

6) explorer.exe   Windows Explorer
                  Standard Windows Component             Microsoft

7) csrss.exe      Client Server Runtime Process
                    (Standard Windows Component)         Microsoft

8) wbcache.sve    Standard Windows Components            Microsoft
   wbcache.enu
   wbcache.eng

9) ccapp.exe      Norton Antivirus Component             Symantec

10)ctfmon.exe     CTF Loader
                  (Standard Windows XP Component)        Microsoft

FileAdvisor, which launched on March 13 with 4 terabytes of data and more than 250 million file records, has since grown to more than 5 terabytes of data and 290 million file records. The service offers accurate file identification, source information, and other useful data on the otherwise unknown files on your computer. The result? Consumers, business users, and IT professionals can trace the source of the software on their computers, helping to identify applications that are wanted or unwanted. Armed with this information, users can easily understand the function, importance, and validity of the software they are researching.

Registered users came from 68 countries; the top referring countries after the United States include Germany, Canada, Switzerland, France, Netherlands, and Australia.

"It's clear that people around the world are curious about what is running on their computers," said John Hanratty, Vice President of Marketing, Bit9. "Bit9 FileAdvisor eases the burden of identifying valid commercial software and represents one aspect of Bit9's value proposition of detecting and stopping unwanted software in the enterprise."

Bit9 FileAdvisor is available free via its own web site, http://fileadvisor.bit9.com, as well as via a downloadable utility, and also from Bit9's home page, www.bit9.com. Bit9 has compiled the FileAdvisor database via an innovative, proprietary method of crawling the Web, through aggressive acquisition of physical media, as well as through partnerships with IBM and others. In addition, Bit9 FileAdvisor uses the National Institute of Standards and Technology's (NIST) National Software Reference Library (NSRL) Reference Data Set (RDS) -- also known as the NIST Special Database 28 -- as well as the Department of Justice's Hashkeeper database. Never before have these databases and other sources of information been aggregated in such a massive repository and made available to the general public.

About Bit9, Inc.

Bit9 is the first company to solve the problem of unwanted software at the endpoint. As the only solution to detect and stop spyware, malware, and non-business applications on desktops, laptops, and servers, Bit9 gives IT professionals unprecedented, network-wide visibility and control in real time. Bit9 provides the earliest and best possible protection against known and unknown intrusions, including Zero-day attacks. Founded in 2002 and headquartered in Cambridge, Massachusetts, Bit9 is a privately held company. For more information, visit www.bit9.com.

Bit9, Inc., Automatic Graylists, Find File, FileAdvisor, Parity, and ParityCenter are trademarks or registered trademarks of Bit9, Inc. All other names and trademarks are the property of their respective owners.