Can a virus infect different computers connected to the same router?

[Emanuel N]

Brothers computer got hacked, he basically lost his yahoo/gmail/facebook accounts. His running a malware scan so that should be cleared up. However, whatever malware or virus that got his computer, can it infect other computers that are connected to the same router my brothers laptop uses? I mean ya, a malware program can come from anywhere, but can it spread through a router like that?

[jungleempress]

yes

[arou42]

Yes, absolutely. Think about what you're asking. Can a virus, that's transmitted through the internet to one machine, infect another machine on the same internet connection!!!☺

[Black Fire]

does depend on the virus if its merely a trojan then it might no replicate to other systems but there are some worms which search local networks before trying to infect other places, get your antivirus sofrware aswell as malware also firewall the hell outa the system if theres info going out which the firewall thinks is suspicious then it will kill it.....