Bruce mentions D-Link backdoors and offers links to articles: https://www.schneier.com/blog/archives/2013/10/d-link_router_b.html
One such article in InfoWorld: http://www.infoworld.com/article/2612384/network-router/backdoor-found-in-d-link-router-firmware-code.html How to reverse engineer a D-Link backdoor: http://www.devttys0.com/2013/10/reverse-engineering-a-d-link-backdoor/Use care if you decide to flash it with clean firmware. They sure do make expensive paperweights!
