EncryptionCredit: Warenemy: DreamstimeWe all know now that U.S. intelligence agencies have deployed a massive digital dragnet that has scooped up and stored vast quantities of information that, among other things, records who, when, where, and how long Americans talk to each other. “You can shout Big Brother or program run amok, but if you actually look at the details, I think we’ve struck the right balance,” said President Barack Obama after the secret government digital snooping was leaked. On the other hand, Reason Science Correspondent Ronald Bailey looks into ways that you can cover your digital tracks—just in case you harbor some small doubts that your government has struck the right balance between its power and your liberty.