View Full Version : Infection through home network, is it possible?

I was wondering if its possible a pc get infected through a router when more than two pcs are connected. In case the first one is infected, will it spread it self to other pcs in that network?

Routers (http://en.wikipedia.org/wiki/Router) can be compromised if they have a weak or default password which attackers can easily guess or break using a dictionary attack (http://en.wikipedia.org/wiki/Dictionary_attack) or brute force attack (http://www.imperva.com/application_defense_center/glossary/brute_force.html). Malware which can modify routers are rare and may require the router to be a specific make, model and firmware revision. The most common was the DNSChanger Trojan (http://www.f-secure.com/v-descs/dnschang.shtml) which compromised the router's weak default password using brute-force attacks. The Trojan then changed the router's DNS table to malicious DNS servers...redirecting Domain Name resolutions to unsolicited, illegal and malicious sites the attacker wanted victims to access.

Some routers have known vulnerabilities which can be exploited to open them up to attacks without needing to know the proper password. There have been various reports of vulnerabilities and attacks against hardware devices such as routers and data storage. For example, Ars Technica reported that ASUS routers and any storage devices attached to them may be exposed to anyone online without the need of login credentials if users have taken advantage of remote access features built into the routers. Linksys routers have been reported to be vulnerable to a simple exploit that could give an attacker remote access to the router.

These are general instructions for how to reset a router (http://en.wikipedia.org/wiki/Router):

Unplug or turn off your DSL/cable modem.
Locate the router's reset button.
Press, and hold, the Reset button down for 30 seconds.
Wait for the Power, WLAN and Internet light to turn on (On the router).
Plug in or turn on your modem (if it is separate from the router)

Thank you for the info, I'll read it through and use the recommendations.