Portsmouth City Council has become the latest local authority to be hit by a cyberattack.
The Unified Council said it was among those affected by a distributed denial-of-service (DDoS) attack by a group calling itself NoName057 (16).
Pro-Russian hackers claim responsibility The attacks also affected places such as Salford and Middlesbrough.
Portsmouth said council services had not been affected and residents’ data had not been compromised.
Statement on the authority’s Facebook page said: “We can confirm that the Portsmouth City Council website is experiencing a cyber attack, which means you may experience problems when trying to use the site.
“Portsmouth is one of a number of local authorities in the UK affected by a distributed denial of service (DDoS) attack by the NoName057 group (16).
“Council services were not affected by the attack and user and resident data was not at risk, however, the length of time the website will be up may be unknown.
“We are working hard to resolve the issue as quickly as possible and apologize for any inconvenience caused.”
The council said its teams are still available to answer inquiries during business hours and residents can access online services and pay online my portsmouth website.
Other parliaments have also been hit by cyberattacks this week.
Salford, Bury and Trafford Council confirmed their websites were temporarily affected but said they were now back online.
Middlesbrough Council’s website is Offline Wednesday after the IT department discovered the problem.
A spokesman for the National Cyber Security Center (NCSC) said the organization provided guidance to affected councils.
they told Local Democracy Reporting Service: “While DDoS attacks are relatively low in sophistication and impact, they can cause damage by preventing legitimate users from accessing online services.”