Apple stepped things up in their fight against the FBI during the day on Wednesday. CEO Tim Cook published an open letter to customers, saying the FBI’s actions as an “unprecedented step which threatens the security of our customers.” “The government suggests this tool could only be used once, on one phone,” Cook wrote. “But that’s simply not true. Once created, the technique could be used over and over again, on any number of devices.” Fred Cate the Director of the Center for Applied Cybersecurity Research at Indiana University joined John with reaction.