How Does the U.S. Respond to a Major Cyberattack?

TL;DR

A major nation-state cyberattack requires simultaneous victim assistance, network recovery, intelligence collection, public-private information sharing, and preparation for possible physical attacks. Federal leaders would activate preapproved incident-response plans, coordinate across agencies and international partners, distribute usable threat indicators, protect likely targets, and present the president with response options grounded in legal authorities and current intelligence.

Transcript

My name is Dmitri Alperovitch. This is Jay's and I, um, annual wargame that we run here at RSA Conference. We've done it for a number of years now. And usually we have different teams that are trying to respond to the scenario, but this time, this year, we decided to do something different, where we wanted to bring in former senior executives from ... Read More

Key Insights

• National cyber crisis management is a whole-of-government responsibility that joins Homeland Security, Justice, Defense, intelligence organizations, law enforcement, the State Department, and the Treasury Department. Each participant contributes distinct authorities, information, capabilities, and relationships with affected organizations or threatened sectors.
• Victim assistance is an immediate Homeland Security priority during a major cyberattack. Asset-response teams would investigate compromised networks, remove malicious actors, help organizations restore operations, and ensure recovery occurs more securely across Congress, nongovernmental organizations, financial institutions, and other affected entities.
• Preparation for retaliation should begin before a major national-security decision becomes public. Officials would anticipate likely adversary responses, prepare messages for infrastructure owners and operators, identify potential victims, and offer assistance quickly when operational sensitivities previously prevented detailed warnings.
• Threat indicators become more useful when intelligence agencies, law enforcement, and victim-response teams cooperate to release them. Classified forensic and intelligence findings may need unclassified versions so private organizations and other potential targets can act without access to protected government reporting.
• Iranian cyber activity in the exercise includes document theft, public leaks, destructive wiper attacks, and suspected financial theft. The scenario also references prior attacks against financial institutions and critical infrastructure, giving officials a basis for identifying sectors that may face additional danger.
• A national cyberattack may be part of a blended campaign rather than an isolated technical incident. The Justice Department and FBI would consider whether Iranian actors or proxies might supplement network operations with physical attacks against U.S. interests at home or abroad.
• A preapproved incident-response playbook enables faster action after a defined red line is crossed. The exercise describes a list of agency authorities and possible adversary actions that had already received legal review from the Department of Justice and the Attorney General.
• Cyber exercises expose both capabilities and gaps before officials confront a real crisis. The National Security Council uses war games to examine preparedness, clarify agency responsibilities, test response options, and give leaders an honest assessment of what the government can do and what requires improvement.

Questions & Answers

Q: How would the U.S. government respond to a major nation-state cyberattack?

The response would combine immediate assistance to victims, investigation of compromised networks, intelligence collection, warnings to potential targets, and coordination among federal departments. Officials would activate an existing incident-response playbook, distribute threat indicators when possible, prepare for further cyber or physical attacks, work with international partners, and develop legally reviewed options for national leaders.

Q: What role does Homeland Security play during a national cyber crisis?

Homeland Security would provide asset-response assistance to affected organizations. Its teams would determine what happened on compromised networks, remove malicious actors, and support secure restoration and recovery. The department would also identify possible additional victims, contact critical infrastructure owners and operators, offer assistance, and coordinate with intelligence agencies and the FBI to share actionable indicators.

Q: What would the FBI do after a hostile nation crosses a cyber red line?

The FBI would activate a preexisting incident-response plan covering the authorities of relevant departments and agencies. It would investigate victim sites, collect intelligence, coordinate with Homeland Security and state and local law enforcement, issue joint bulletins, and pre-deploy planned assets. It would also examine whether cyber operations might be accompanied by attacks against U.S. interests.

Q: Why must officials consider physical attacks during a cyber incident?

A serious confrontation may produce a blended response rather than cyber activity alone. In the exercise, the Justice Department warns that Iranian actors or proxies could conduct physical or other kinetic attacks against U.S. interests inside the country or abroad. That possibility requires coordination with Defense, State, Homeland Security, and state and local law enforcement before additional attacks occur.

Q: How can classified cyber intelligence help private organizations?

Federal agencies can convert classified intelligence into versions suitable for broader distribution. Intelligence agencies, the FBI, and Homeland Security would combine intelligence reporting with forensic findings from victim networks, then release as much useful information as possible. For sensitive sectors, the Treasury Department could also provide classified reporting to cleared personnel who are positioned to respond to active attacks.

Q: Which organizations and sectors are targeted in the cyberwar scenario?

The scenario describes attacks against the U.S. Congress, Israeli and U.S. interest groups, and American financial institutions. Congressional and advocacy-group documents are leaked, networks are damaged with a crude wiper, and $1.5 billion is reportedly stolen through the SWIFT network, although that theft remains unconfirmed. Critical infrastructure is also treated as a likely target.

Q: Why are cyber war games useful for national security officials?

Cyber war games let officials test how national leaders and agencies would manage a severe attack before an actual emergency. They help participants examine available authorities, coordination channels, intelligence-sharing procedures, victim-assistance capabilities, and response choices. The exercise is also designed to reveal strengths and preparedness gaps that the National Security Council and other organizations need to address.

Q: How does a prepared incident-response playbook improve crisis management?

A prepared playbook gives agencies a legally reviewed set of actions that can be activated rapidly when an adversary crosses a defined red line. In the exercise, officials had already mapped relevant departmental authorities and anticipated possible Iranian actions. This preparation supports faster coordination, intelligence collection, public and classified warnings, asset deployment, victim assistance, and protection against follow-on threats.

Summary & Key Takeaways

• Former senior U.S. government officials simulate a principals committee meeting during a catastrophic cyber crisis. The scenario begins after the United States withdraws from the Iran nuclear agreement, restores sanctions, and considers military remedies. Iran then signals possible nuclear weapons and intercontinental ballistic missile ambitions while suspected cyber retaliation rapidly unfolds.

• The simulated attacks include leaked congressional and advocacy-group documents, destructive wiper activity, and an unconfirmed theft of $1.5 billion through the SWIFT network. Intelligence, law-enforcement, and commercial threat-intelligence organizations suspect Iranian involvement, specifically the Iranian Revolutionary Guard, creating urgent demands for attribution, recovery, protection, and coordinated national decision-making.

• Homeland Security prioritizes victim assistance, secure restoration, warnings to critical infrastructure, and distribution of declassified indicators. Justice and the FBI activate a preapproved incident-response playbook, use available intelligence authorities, coordinate with domestic and overseas partners, and prepare for blended threats that could combine cyber operations with physical attacks against U.S. interests.