It's cold. And we're standing outside an unassuming but high security facility in Farnbrough.
In the reception a camera swings round ominously to take our picture for a security pass that makes us look like a ghost.
This building belongs to aerospace, defence and security firm QinetiQ. But we're here to see ordinary people at work.
We move through an airy atrium towards a conference centre wing belonging to Boeing, called The Portal. This is where the Cyber Security Challenge is taking place.