Hackers from the anonymous group hacked the site of the Russian state corporation for nuclear energy Rosatom on Tuesday. The corp is allegedly running Zaporizhzhya, a Ukrainian nuclear power plant seized by Russia.
Anonymous changed the interface on the site and made it otherwise inaccessible. They also claimed to have gained access to gigabytes of data, which they plan to leak to the public.
https://twitter.com/YourAnonNews/status/1503806140685111299