Is It the Dawn of the Encryption App?

We might live in an age of persistent and pervasive surveillance. The recent revelations about the secret National Security Agency programs aimed at collecting vast amounts of data on Americans and foreigners seemingly confirm what tinfoil-wearing netizens have feared for years: They're watching us; technology has turned against its users.

Amidst prying eyes, a small but growing group of hackers and programmers is working on applications that use cryptography — the science of creating techniques to hide data and render it readable only to intended recipients — to fight surveillance and give regular citizens access to what was once only reserved to computer experts.