By Ashley Cowburn Foreign “state involvement” cannot be ruled out in a massive Ministry of Defence cyber-attack amid speculation China carried out the hack. The Defence Secretary Grant Shapps was forced to issue an apology today to armed forces personnel after a massive breach on the payroll system that left their data exposed. The hack had potentially compromised the bank details of up to 272,000 serving members of the armed forces and some veterans, with a very small number of addresses accessed. Mr Shapps declined to identify the “malign actor” behind the attack amid reports the Government …