A Ukrainian cyber guerrilla warfare group plans to launch digital sabotage attacks against critical Russian infrastructure such as railways and the electricity grid, to strike back at Moscow over its invasion, a hacker team coordinator says.

Officials from Ukraine’s defense ministry last week approached Ukrainian businessman and local cybersecurity expert Yegor Aushev to help organize a unit of hackers. Aushev said he planned to organize hacking attacks that would disrupt any infrastructure that helps bring Russian troops and weapons to his country.