At the dawn of the digital age, our Nation saw endless opportunities to generate prosperity by expanding our networks and connecting to the world. But today, American prosperity depends as much on defending those networks as it does on expanding them. Every day, our country faces digital intrusions from criminals, activists, terrorists, and nation-states like Russia, China, and Iran. The impact of those intrusions are felt everywhere; from our National security secrets to the personal information of Americans. We cannot tolerate acts of cyber vandalism, theft, or cyber warfare, especially when they put our Nation's critical infrastructure at risk and when they steal American intellectual property and innovations. It is clear that safeguarding American cyber space is one of the great National security challenges of our time; accordingly, our Government must play a leading role in combating threats in the digital domain.