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An outside supplier’s security incident has disrupted the UK Housing Ombudsman’s case management system and online services.
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The watchdog is checking what data was affected, while reports say some contact details may have been copied.
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Residents cannot file new complaints online for now and must contact the watchdog by phone or email.
The UK Housing Ombudsman Service is investigating a cybersecurity incident linked to an outside supplier. The incident disrupted its case management system, so social housing residents cannot reach several online services. In simple terms, a third-party incident means an outside company is involved.
The watchdog shared the news on October 13, 2026, and said it had contained the incident. It is working with its external supplier to learn what happened and how much data was involved. A watchdog is a body that checks how organizations treat people.
Reports published on the same day added significant detail about the possible effect on residents.
Complaint Services and Webchat Go Offline for Residents
The incident affects the system that the Ombudsman uses to manage cases, according to its official website. Residents cannot submit new complaints, view their existing complaints, or use the webchat and webform for now.
The watchdog says it is investigating the incident and working to restore access to these services. Residents who need to raise a new complaint should email [email protected] or call 0300 111 3000.
In its statement, the watchdog said it is working with its supplier to establish the full facts. It is also checking whether personal information was affected and promised further updates when more information becomes available.
The Housing Ombudsman has reported the incident to the Information Commissioner’s Office (ICO), the UK’s data protection regulator. A regulator is an official body that makes sure organisations follow the rules.
Reports Say Names, Addresses and Phone Numbers May Be Copied
According to reports, the Ombudsman emailed potentially affected individuals to warn them about possibly copied details. The email said that names, addresses and telephone numbers may have been copied from its system.
The service has not publicly confirmed what caused the incident or named the external supplier involved. Its investigation is still ongoing, and the number of people potentially affected remains unclear.
Residents Warned as Housing Sector Faces More Cyber Incidents
The Housing Ombudsman has urged tenants and leaseholders to stay cautious when they receive unexpected communications. Tenants rent their homes, while leaseholders hold a lease on their property. The watchdog warned people not to disclose personal information unless they are confident they know who is requesting it.
This advice is particularly relevant after the report that some contact details may have been copied. Such information could potentially help criminals craft convincing messages. However, the Ombudsman has not confirmed that anyone has used the information for fraud.
Residents should verify unexpected requests through official contact channels. They should report suspicious activity to the relevant organisation or authorities. The watchdog has also provided a dedicated contact, [email protected], for questions about the incident.
The Housing Ombudsman Service is a public body sponsored by the Ministry of Housing, Communities and Local Government. The Housing Act 1996 established it, and it handles disputes between social housing residents and landlords in England. Those landlords include housing associations, property managers and letting agents.
The disruption comes amid other cybersecurity incidents affecting the UK’s housing sector. Reports say London-based housing association L&Q suffered a cyberattack in September that affected 12,000 residents. The association manages approximately 105,000 homes.
Cyber incidents have also affected suppliers in other industries, including the aerospace sector. French aircraft parts supplier Airbus and Boeing’s parts supplier also reported a data breach, as covered in French Airbus and Boeing Parts Supplier confirms data breach.
For now, the Ombudsman says it is working to restore its services as quickly as possible. Until the investigation shows the full extent of the incident, the exposure of residents’ information remains a concern. Affected individuals should stay alert for suspicious communications.
