Mr. Simon O'Brien:

In our building, we operate through internal wired systems and we always considered that Wi-Fi networks present a potential threat in themselves because of how they can be used. In respect of this issue, since the time the current commission was formed we rarely used the room in which the piece of kit in question was located. I understand - no doubt Ms Foley can confirm this - the room was regularly used by the previous commission. Nearly all the business we have done since the inception of the current commission has been on the fourth floor in and around the commissioners' offices.