A teenager named Dylan Kjorstad had his cancer operation postponed because of a cyber-attack that caused concerns about blood supplies. The delay in surgery was a result of the hospital's need to ensure that there were enough blood resources available for the procedure.

A major cyber attack has occurred at NHS hospitals in London, causing a critical incident with operations being cancelled. The systems at Guy's and St Thomas' and King's College Hospital have been targeted by a malware attack.

Several London hospitals have been targeted by a cyber attack, leading to the cancellation of operations. The attack has affected the ability of urgent and emergency care services to access quick-turnaround blood test results. This disruption could potentially impact patient care and treatment at the affected hospitals.