Obviously the work they do is classified, so we can't say very much about it here.
I think in the post-Second World War period, signals intelligence was largely about satellite dishes and satellites and stuff like that. But since, I guess, the early seventies perhaps signals intelligence has been much more about computer networks and interception on computer networks. The skill set that's required to do that kind of interception doesn't look very different in the end from the skill set being used by people to develop malware and intrude on civilian systems to do bad things or criminal things or commercial things. I think it's that synthesis that has paid off for them.