Since the temporary detainment of Kobeissi at the U.S. border in June of this year, the Cryptocat application has been more publicly visible.

FORBES: Cryptocat Increases Security In Move Away From JavaScript Web Delivery

This is something that Cryptocat developer Nadim Kobeissi knows about intimately.

FORBES: Pressure Increases On Silent Circle To Release Application Source Code

If two people have agreed on a private key ahead of time, they can use the service from a Web-connected machine anywhere in the world and start communicating securely, Kobeissi says.

FORBES: Crypto.cat Aims To Offer Super-Simple Encrypted Messaging