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Safe to have infected PC online - But not in Workgroup?


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#1 Mel_3

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Posted 08 July 2012 - 04:52 PM

- On a small Peer-to-Peer network...
- One PC is infected
- Setup is: Cable Modem connected to small Linksys Router connected to a few PC's

1 - Is it a concern that the malware could spread to other PC's in the small Workgroup?
2 - If so will this fix it while still allowing the infected PC net access...
.. turn off all clean PC's
.. remove the infected PC from the Workgroup
.. turn on the clean PC's
This way the infected PC is not in the Peer-To-Peer Workgroup but it is still sharing the same router...

Right now I'm turning off (or disconnecting) all clean PC's from the network before turning on the infected PC. This is a problem for other users.

Thanks for any help.

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#2 Didier Stevens

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Posted 10 July 2012 - 09:13 AM

Are the clean PCs fully patched and are there no Windows accounts on those clean PCs with weak passwords?

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#3 quietman7

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Posted 10 July 2012 - 01:45 PM

Using infected computers on the Internet is a security risk to everyone as they are prone to attack from hackers, Botnets, and zombie machines. When there are compromised computers connected to the Internet, malware spreads faster and more extensively, distributed denial-of-service attacks are easier to launch, spammers have more platforms from which to send e-mail and more zombies are created to perpetuate the cycle.
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#4 ShadyD

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Posted 11 July 2012 - 06:59 PM

Think about this as well. Depending on the virus, it may give an attacker a back door into your system. They can use this system as a jumping off point for other attacks, or against your other systems. Maybe they set up your computer as a jumping off point for hacks or something like forwarding child porn. That way, anyone tracking or investigating sees your IP rather than his.

If your computer has a virus, it's not your computer anymore.




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