Cyberspace and its underlying infrastructure are vulnerable to a wide range of risks stemming from both physical and cyber threats and hazards. Sophisticated cyber actors and nation-states exploit vulnerabilities to steal information and money and are developing capabilities to disrupt, destroy, or threaten the delivery of essential services. Cyberspace is particularly difficult to secure due to a number of factors: the ability of malicious actors to operate from anywhere in the world, the linkages between cyberspace and physical systems, and the difficulty of reducing vulnerabilities and consequences in complex cyber networks. Of growing concern is the cyber threat to critical infrastructure, which is increasingly subject to sophisticated cyber intrusions that pose new risks. As information technology becomes increasingly integrated with physical infrastructure operations, there is increased risk for wide scale or high-consequence events that could cause harm or disrupt services upon which our economy and the daily lives of millions of Americans depend. In light of the risk and potential consequences of cyber events, strengthening the security and resilience of cyberspace has become an important homeland security mission.

Information Sharing

Information Sharing

National Cyber Awareness System

Tips and Alerts

Federal Network Security

Securing Federal Networks

Election Security

Protecting Critical Infrastructure

Directives and Guidance

Directives and Guidance


Information on Current Cyber Threats:

Information on Cyber Threats from China
Information about Cyber Threats from Russia
Information on the Cyber Threat from North Korea
North Korea





Last Updated Date: April 23, 2019

Was this webpage helpful?  Yes  |  Somewhat  |  No