Department of Homeland Security

We assess that Russia would consider initiating a cyber attack against the Homeland if it perceived a US or NATO response to a possible Russian invasion of Ukraine threatened its long-term national security. Russia maintains a range of offensive cyber tools that it could employ against US networks—from low-level denials of service to destructive attacks targeting critical infrastructure. However, we assess that Russia's threshold for conducting disruptive or destructive cyber attacks in the Homeland probably remains very high and we have not observed Moscow directly employ these types of cyber attacks against US critical infrastructure—notwithstanding cyber espionage and potential prepositioning operations in the past. Read more from the Department of Homeland Security brief.