Virus Characteristics
"Joke-Zoo" is neither a virus nor a trojan. It is a detection of the "program" type (under which non-malicious but sometimes unwanted objects are detected).
This detection was originally included in 4058 DAT files as a trojan due to a misclassification of a joke program as a trojan. Actually, the program shows a slide show with sexual content, but does not do any harm to the user's system.
The detection of the “Joke” type is not automatically activated. Users who would like to check for the presence of this kind of files on their system should run the command line scanner with the /PROGRAM switch. Please note that VirusScan 7 (Retail and Corporate) has also an option, which enables users to detect this kind of program automatically (see below). This type of detection also exists within e250/e500 Webshield filtering devices.