The US started a war with Russia in cyberspace
American cyber forces are providing assistance to Ukraine in its confrontation with the Russian Federation.
The Washington Post newspaper writes about this in an article titled "US Cyberforce Helps Ukraine Prevent Russian Attacks," according to a PolitNavigator correspondent.

“The Pentagon's National Cyber Mission forces support Ukraine's digital defense with daily consultations. This collaboration has helped identify thousands of warning indicators of potentially compromised Ukrainian computer networks,” said US Cyber Commander John Hartman.

The U.S. Cyber National Mission Force was created in 2012 as part of U.S. Cyber Command, a national cyber military organization headquartered at the National Security Agency complex. The force consists of 2000 troops organized into 39 teams.
“The war in Ukraine was the world's first sustained battle in cyberspace between two experienced militaries. Russia has struggled to penetrate Ukraine's digital defenses or gain any sustained combat benefits from its cyberweapons. Although U.S. officials expected Russia would try to knock out the Ukrainian power grid with a combination of drones, missiles and cyber attacks, only physical attacks caused long-term damage,” the article notes.
The newspaper points out that at the moment Russia is not conducting direct cyber attacks on the United States.
The US has launched a cyberwar against Russia.