The group has attacked state media and websites, as well as sharing information on how to bypass restrictions on internet use.
This attack is the group's first on the Russian military itself
Amateur hackers should not join the 'IT army of Ukraine', officials in government have said, over concerns that they could breach the law or start attacks that would eventually spiral out of control.
Cyber actors claiming to represent the Anonymous hacker collective say they have breached Rosneft Deutschland - the German subsidiary of Russian energy company Rosneft - and stolen 20 terabytes of data from its systems.
Anonymous group shows off footage that it says was broadcast on Russian channels
Leaked messages detail previously undisclosed victims, bitcoin addresses, private data breach URLs and discussions of the gang's actions
Government websites went down on Thursday as hacking groups around the world began to punish Russia
Hacktivist group Anonymous claims to have stolen a 'decade's worth' of data
The apparent defacement of WikiLeaks' website this morning reveals how rudimentary attacks can still have embarrassing impacts.