Former CIA Chief of Disguise Explains How Spies Use Disguises [video]
With Facebook and facial recognition, spies can be identified <i>before they even know they want to become a spy</i>. There is literally a lifetime of facial recognition data on social networks for youths and college grads as they post their pics online, and if they get recruited to become a spy in their 20s, there will already be enough information to identify people globally, as they walk through airports, shopping centers, etc and have their pictures videoed constantly.<p>Facebook, et. al is a treasure trove of data for purposes like these.