Russia linked hackers hit UK Ministry of Defence as security secrets leaked
www.mirror.co.uk
Hackers targeted the database of a firm which handles the security for some of Britain's most secretive sites - including a nuclear submarine base and a chemical weapon lab

I’m afraid I had to boringify the title, as The Mirror’s was a little misleading.

Zoar got breached, and lost documents related to their fence installations at sensitive govt sites, including Porton Down, the Trident base, and several high security prisons.