“Speaking at the Chaos Communication Congress, an annual computer hacker conference held in Berlin, Germany, Tobias Engel, founder of Sternraute, and Karsten Nohl, chief scientist for Security Research Labs, explained that they could not only locate cell-phone callers anywhere in the world, they could also listen in on their phone conversations. And if they couldn’t listen in real time, they could record the encrypted calls and texts for later decryption.”