How do you create dramatic film out of mathematics? We find out with writer and director Timothy Lanzone.

Bitcoin is a digital currency that isn't regulated by any kind of central authority. The structure which allows this decentralisation is called blockchain. But how, and how well, does it work?

Can you encode a message so that errors in transmission are automatically corrected?

A quick look at the role of mathematics in communication — from making and breaking codes to making sure messages arrive intact.

A team of computer scientists has found a weakness in the world's most popular anonymity service.

How a special kind of curve can keep your data safe.

Marcus du Sautoy talks about football, cryptography, and numbers.