By Alexander Martin The National Health Service (NHS) in England issued an urgent call on Monday for O-type blood donations following a ransomware attack that has disrupted blood matching tests for several healthcare organizations in London. The attack last week hit Synnovis, a business providing pathology services for hospitals and local clinics in the capital. The Russia-based Qilin ransomware gang is suspected by officials to be behind the attack, according to sources briefed on […]