This photograph taken in Kyiv on February 26, 2024 shows a laptop screen with a webpage of the IT Army of Ukraine group of volunteer hackers. The IT Army of Ukraine first set up in the wake of Russia’s devastating attack, and has since hugely grown in importance. It is one of a flurry of hacker groups that have flourished in wartime, countering Russia from behind their screens and operating in a legal grey area. (Photo by GENYA SAVILOV/AFP via Getty Images)
As the Russia-Ukraine conflict has evolved, the U.S. should be careful of taking cyber lessons from the early days of the war, Gen. Timothy Haugh said.
