FhnuZoag (875558) writes "Via Ars Technica ( http://arstechnica.com/business/news/2012/04/backdoor-in-mission-critical-hardware-threatens-power-traffic-control-systems.ars ): A backdoor has been found in Canadian based RuggedCom's 'Rugged Operating System', providing easy access to anyone with the devices's MAC address — something often publically displayed. Rugged OS is being used in a wide range of applications, including traffic control, power generation, and even US Navy bases. The backdoor was first found over a year ago, and RuggedCom have so far refused to patch out the exploit. (Original disclosure: http://lists.grok.org.uk/pipermail/full-disclosure/2012-April/086652.html )"
Link to Original Source