It was a Sunday morning in mid-October 2020 when Rob Miller first heard there was a problem. The databases and IT systems at Hackney Council, in East London, were suffering from outages. At the time, the UK was heading into its second deadly wave of the coronavirus pandemic, with millions living under lockdown restrictions and normal life severely disrupted. But for Miller, a strategic director at the public authority, things were about to get much worse. “By lunchtime, it was apparent that it was more than technical stuff,” Miller says.