Welcome to the Virus Encyclopedia of Panda Security.
Posa is a joke typemalware. These harmless programs display fake error messages on screen warning about the execution of destructive actions, fake these actions or change the mouse or screen settings.
To be more precise, Posa displays a message on screen and opens the CD-ROM tray.
Posa is easy to recognize, as it displays the following message on screen:
When the user pushes the OK button, Posa opens the CD-ROM tray.
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