Finding out what is going on and coming to "some sort of conclusion," such as improving security and protection for our customers, is also what drives him.

"It is also about disseminating that information to customers and the public to bring some sort of closure, and that is very satisfying," McDonald said.

When looking to the future, McDonald is unable to identity a single trend that he will be wary of, as he is always keeping an eye on "everything."

"The area that is increasing is mobility, which is still in its early days but is soon expected to explode," he said.

"Social networking security is getting bigger now that everyone is using it."