Threat Description



Category: Malware
Type: Virus
Platform: W32
Aliases: Prudents


This virus is probably written by the same author as the PSQR variant of the Jerusalem virus, as it checks if that virus is present, when it is run. This virus will overwrite the last 32 bytes of any file it infects, possibly destroying the victim. Prudents activates on May 1st - May 4th of any year, interfering with disk writes.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.


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