NATO is very aware of the need to secure its systems, and we have been the subject of numerous politically-motivated cyber attacks. We will look at the beginning of the brief at the issue of when these can be said to amount to cyber terrorism, and compare the NATO definition with those of other organizations. We will move on to cyber attacks, and give some examples of this activity. This raises the question of what the response to cyber attack should be. We will look at the decisions taken by NATO on this subject, and at what NATO is doing to prevent such activity on its networks. I will conclude the presentation with some recommendations for our defensive stance against cyber terrorism.