Old Wives' Tales
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Toxin du jour
Claim: The Windows file SULFNBK.EXE should be deleted because it masks a dormant virus.
Example: [Collected on the Internet, 2001]
Origins: Whether the SULFNBK.EXE message was deliberately intended as a prank for gullible computer users or an honest warning based on a misunderstanding, the instructions listed above should NOT be acted upon. The file SULFNBK.EXE is a standard component of the
SULFNBK.EXE is one of the files that the W32/Magistr.a@MM virus used as a means of transmission — infected copies were attached to mail messages which copied them to the recipients' PCs. (The real SULFNBK.EXE file should be found in the C:\Windows\Command folder.) However, the mere presence of this file does not mean that a system is infected.
You should not delete SULFNBK.EXE unless a virus-check program has scanned the file and told you it is infected. (The lack of SULFNBK.EXE won't generally cause a PC to stop working, but users who have removed it from their PCs should make the effort to restore it to avoid potential problems.) If you have already mistakenly deleted this file, you can find instructions for restoring it at Microsoft's web site or on the Symantec page linked below.
Last updated: 29 January 2008
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