All the brands are vulnerable. Security researcher Stefan Viehbock has just discovered a major security hole which allowed him to use a brute force technique to access a WiFi Protected Setup (WPS) PIN-protected network in about two hours. According to Viehbock, a design flaw allows the WPS protocol’s 8-digit PIN security to fall dramatically as additional attempts are made.
So what this means is that if i’m in your neighborhood and you have WPS on then I’lll be in your network, whether you like it or not (I don’t really mean ME, just someone who is aware of this security hole). All the major brands are effected by this, including Linksys, Cisco, Netgear, DLink & TP-Link among others.
Linksys routers won’t turn off WPS. Unless you have an alternate firmware on it, like DD-WRT. Everything else you can go and turn off that “feature”
DO IT NOW!