Videos circulating on Russian Telegram channels reportedly substantiate a claim that a pro Russian hacker, Joker DNR, was able to penetrate the so-called "Delta" command and control software used by the Ukrainian military.

Some of the screen-recorded footage shows maps with interactive unit icons that, when clicked, show the grid location and composition of each Ukrainian element. Joker DNR went on to say that he infected every computer that ever used the system with malware.