Cyber Riot

Threat description




Cyber Riot was found in USA at the end of 1993. Cyber Riot is the first advanced Windows virus. Before it, Windows viruses were cumbersome, slow to spread, and technically quite rudimentary. Cyber Riot, however, is a real threat in Windows environment.


Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

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

Contact Support

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

Technical Details

What makes this virus remarkable is that it is able to use the Windows dynamic-linking structure and pass control smoothly to the programs it has infected when its own execution has run through. Previous Windows viruses have been unable to do this. Cyber Riot also stays resident in the background when Windows is active.

Cyber Riot spreads through Windows applications. When an infected application is run, the virus strives to strike at the Windows kernel file. Once the kernel file is infected, the virus starts together with Windows and infects every Windows application that is run on the computer.

The virus activates on certain dates, displaying message boxes. After the user clicks OK to remove the box, the virus overwrites a part of the hard disk.

Cyber Riot infects only Windows applications and the Windows kernel file. The virus is unable to spread under DOS. However, since many people use only Windows in their computers, this handicap does not necessarily slow the virus's spread to any great degree.

Other Windows viruses include:

- Twitch
 - WinSurfer
 - Win_Viking.A
 - Win_Viking.B
 - Win_Vir
 - WinTiny

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