More than 135,000 UK residents have been without online public services for nearly a week, as their council struggles with a cyber-attack.
Redcar and Cleveland Borough Council’s website and all computers at the authority were attacked on Saturday.
One cyber-security expert told the BBC the incident had all the hallmarks of a ransomware attack, in which files are scrambled until a ransom is paid.
But the council refused to confirm the nature of the hack.
Online appointment bookings, planning documents, social care advice and council housing complaints systems are just some of the services knocked offline.
The National Crime Agency said it was supporting the council.