Qilin: who are the Russian cybercriminals thought to be behind cyberattack on NHS?

The National Health Service (NHS) in the UK was attacked by a cybercriminal group known as Qilin, according to Ciaran Martin, former CEO of the National Cyber Security Centre. This has resulted in the cancellation or redirection of some operations and procedures. Qilin, also known as Agenda, is a Russian-speaking gang with a history of attacking various entities worldwide for financial gain.