https://www.theregister.co.uk/2018/02/09/russian_nuclear_supercomputer_cryptocurrency/

Engineers at Russia's top nuclear weapons lab have been arrested – after the eggheads were caught using one of the supercomputers to mine cryptocurrency.

The government-run research facility at Sarov, southeast of Moscow, has been developing nuke bomb technology since the 1940s. It is a closed town, meaning you need a permit just to visit the area. Security is so tight it doesn't appear on maps.