Hackney Council says it has been hit by a “serious cyber attack”, which is affecting many of its services and IT systems.
The council says it is working with the UK’s National Cyber Security Centre (NCSC) and the Ministry of Housing to investigate and understand the impact of the incident.
It is not year clear what type of cyber attack has hit the council or whether residents’ data has been exposed.
In a statement on the council’s website, which is still up and running, Mayor Philip Glanville said: “Our focus is on continuing to deliver essential frontline services, especially to our most vulnerable residents, and protecting data, while restoring affected services as soon as possible.
“In the meantime, some council services may be unavailable or slower than normal, and our call centre is extremely busy,” he added.
“We ask that residents and businesses only contact us if absolutely necessary, and to bear with us while we seek to resolve these issues.”