Home routers have been vulnerable in the past and will likely be vulnerable in the future, especially when most people don't know how to secure them right out of the box. This article:
http://www.notebooks.com/2010/07/15/how-to-secure-your-router-against-a-hack-compromising-many-popular-routers/
talks about how a vulnerability in many home routers makes them susceptible to a potential attack. The interesting thing about this particular method is that it can affect so many different routers, rather than target a particular make or model.
The gist:
1. Make sure your router has a very strong password. Remember this password is the one used to access the controls of the router and not necessarily your wifi password.
2. Make sure firmware on the router is the latest from the manufacturer.
Happy Computing.
