Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.


Threat LevelLow threat
DistributionNot widespread
Common name:Protector.A
Technical name:W32/Protector.A
Threat level:Medium
Alias:Virus.Win32.Protector.B, Virus.Win32.Protector.A,
Effects:   It carries out damaging actions on the affected computer. It does not spread automatically using its own means.
Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:May 18, 2009
Detection updated on:April 24, 2010

Brief Description 


Protector.A is a virus that spreads to other computers by copying its code to other files or programs.


Protector.A uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • File infection: it infects different types of files, which are then distributed through any of the usual means: floppy disks, email messages with attachments, Internet download, files transferred via FTP, IRC channels, P2P file sharing networks, etc.