20 January 2026

U.S. Cyber Capabilities to Deter and Disrupt Malign Foreign Activity Targeting the Homeland

Emily Harding

Washington has failed to establish deterrence in the cyber domain, and our adversaries control the escalation ladder. Historically, U.S. foreign policy has rested on deterrence, with implied escalation dominance in any domain. But that foundation has failed in the context of cyber. U.S. responses to cyberattacks have been muted, and escalation dominance does not exist.

The U.S.’s offensive cyber capabilities are strong, perhaps unmatched. U.S. Cyber Command (CYBERCOM) has repeatedly proven its capability to disrupt adversary activity, when given the chance. This demonstrated skill, coupled with overall U.S. strength, makes deterrence in the cyber domain possible.

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