Virus Encyclopedia

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Threat LevelHigh threat
DistributionNot widespread
Common name:Stone
Technical name:Spyware/Stone
Threat level:Medium
Effects:   It gathers information about users' Internet habits and sends it out. It can be installed with users' consent, but sometimes it is installed without their consent. It monitors the affected user's Internet browsing habits. It does not spread automatically using its own means.
Affected platforms:

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

First detected on:Sept. 12, 2005
Detection updated on:Sept. 12, 2005

Brief Description 


Stone is a spyware.

Spyware can be installed either with or without users' consent, and either with or without their knowledge about the data gathered and/or the use of it.


It captures certain information entered or saved by the user, with the corresponding threat to privacy: user's browsing habits.


Stone does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.