By Joe Tidy

Cyber correspondent

The International Committee of the Red Cross (ICRC) has, for the first time, published rules of engagement for civilian hackers involved in conflicts.

The organisation warns unprecedented numbers of people are joining patriotic cyber-gangs since the Ukraine invasion.

The eight rules include bans on attacks on hospitals, hacking tools that spread uncontrollably and threats that engender terror among civilians.

But some cyber-gangs have told BBC News they plan to ignore them.