NATO has long recognized the threats posed to the Alliance through cyberspace. At the 2002 Prague Summit, NATO acknowledged for the first time the need to strengthen capabilities to defend against cyber attacks. Over the past 17 years, significant strategic, operational, and technical strides have been taken towards addressing malicious cyber activity. Despite this progress, at the 2018 Brussels Summit, Allies still warned that cyber threats to the security of the Alliance are becoming more frequent, complex, destructive, and coercive. The enduring and evolving nature of this threat, therefore, demands that NATO continue to consider if it is adapting and responding appropriately.