Update: Hoax Circulating About Java File

A hoax circulating around the Internet tells users to delete a legitimate file that is a part of Microsoft's Java middleware.

Anti-virus vendor Sophos has received thousands of inquiries about the hoax in the last week.

The problem was severe enough that Microsoft put up a Knowledge Base article telling users how to repair systems after deleting the file. It can be found here:;en-us;Q322993&.

The hoax e-mail tells users to scan for and delete JDBGMGR.EXE because it allegedly carries a virus that may trigger in 14 days. The file is the Microsoft Debugger Registrar for Java, which has a legitimate function on many systems.

According to Sophos, the confusion is compounded by the W32/Magistr-A virus which is capable of emailing infected copies of JDBGMGR.EXE to innocent users. Protection against W32/Magistr-A has been in the virus libraries of most anti-virus vendors for more than a year.

"If you receive an unsolicited executable file in your email, simply delete the email," said Chris Wraight, technology consultant at Sophos Americas. "This is a confusing hoax, but the message is simple, you should never launch or open unsolicited code on your computer."

Sophos provides more information about the hoax at

About the Author

Scott Bekker is editor in chief of Redmond Channel Partner magazine.


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