Press coverage of the Syrian internet outage at the time: http://www.cnet.com/news/blackout-syria-vanishes-from-intern.... "The Middle Eastern country has been experiencing an Internet outage for several hours, and many people on Twitter are reporting that phone lines are down as well."
http://www.renesys.com/2012/11/syria-off-the-air/ "There was one brief whole-country outage of less than ten minutes on 25 November. By the time that one was confirmed, the outage was over. It would be reaching to call that a “precursor event” or “practice run,” but that’s a possibility."
http://www.huffingtonpost.com/2012/11/30/anonymous-declares-.... "The Syrian government said that terrorists were behind the outages, but CloudFlare, a firm that helps accelerate Internet traffic, said it would have been extremely difficult for any type of sabotage to cause such a comprehensive blackout, according to Reuters."
http://blog.cloudflare.com/how-syria-turned-off-the-internet "All the edge routers are controlled by Syrian Telecommunications. The systematic way in which routes were withdrawn suggests that this was done through updates in router configurations, not through a physical failure or cable cut."