REVEALED: How the Russian cyber attack on the NHS is believed to be much worse than feared

A Russian cyber attack on the NHS led to the theft of medical records of patients from hundreds of hospitals and clinics. This significant breach included names, addresses, and clinical test details from 600 clinics and records of 300 million appointments. Russian hacking group Qilin demanded a £40m ransom and posted the stolen data online when the demand was not met.