It's no longer a question of if you will be hacked.

It's when.

This makes rigorous security testing all the more important. And Red Team exercises, testing defences against an adversary in real time, is one of the most effective methods.

But Red Teaming can be demanding. How should CISOs engage a red team, and what is the best way to make the exercise effective?

In this special report, we speak to Gemma Moore, of Cyberis and CREST, David Benson, of Pen Test People, and Richard Hughes of A&O IT Group.

Reporter: Stephen Pritchard