Introduction If you need to send a secret message to a friend, how could you prevent other people from reading it? One way is to encrypt the message—that is, use a secret code that only you and your ...

A technology company that routes millions of SMS text messages across the world has secured an exposed database that was spilling one-time security codes that may have granted users’ access to their ...

Learn more about the CIA’s uncrackable code in the latest episode of Great Big Story, a new podcast from CNN about the delightful, surprising stories all around us. In the middle of CIA headquarters, ...