Ukrainian military hacktivists breached five websites on Russian Military Topographer Day, ArmyInform has reported.
The affected websites are those of TD Optron, which produces semiconductors for the Russian defence industry, as well as Remsnab-Tractor, EnergoArm, Cheboksary's StroyDorMash plant, and PF Standard, which, according to the military, repair military and engineering equipment for the Russian army.
According to the report, the data from the companies' systems is currently being studied by specialists.
The hacktivists left a reminder on the companies' homepages: "400,000 Russian soldiers are lost in Ukraine forever" and a call on Russians not to participate in the aggression against Ukraine and to convince their loved ones not to take up arms.