The massive set of undersea cables that makes up the infrastructure of the Internet needs to be revamped to ensure security during a crisis, according to a top security expert.

“At the national level, it’s been implemented -- the most important communications get through. But other countries don’t have the capability to communicate across borders” in an emergency, explained Karl Rauscher, a Distinguished Fellow at the EastWest Institute, who was instrumental in forming the U.S. strategy for communications-infrastructure protection following the calamity of Sept. 11.