An anonymous reader writes with news about a Homeland Security memo concerning potential technological attacks during the Super Bowl. The forthcoming Super Bowl event on 7th February could be at risk of a high-tech attack against fans both inside and outside the San Francisco 49ers Stadium. A security memo issued by the FBI and the Department of Homeland Security has warned that the annual game could be a target not just at the stadium, but at other commemorative events taking place in San Francisco and in the Silicon Valley. One of the chief concerns is the various sabotages committed against fibre cables in the area. As the fibre optic cable networks function as back up communication systems in emergency situations, these are a possible target for the attackers. By destroying these cables, response times could be slowed down.