A ransomware attack that hit ION Trading UK could take days to fix, leaving scores of brokers unable to process derivatives trades. ION Group, the financial data firm's parent company, said in a statement on its website that the attack began last week. "The incident is contained to a specific environment, all the affected servers are disconnected, and remediation of services is ongoing," ION Group said. Ransomware is a form of malicious software deployed by criminal gangs which works by encry
