"The incident has been contained, and we are working with our external supplier to establish the full facts, including the extent of the data involved," the Housing Ombudsman Service said.
What the Housing Ombudsman Service has announced
The U.K. Housing Ombudsman Service posted an alert on its official website saying a third‑party IT security incident affected its case management system on Tuesday. The watchdog said it is working with the affected service provider to assess the incident's impact and to restore services as quickly as possible. It also said it is "continuing to investigate whether any personal information has been affected and will provide further updates as soon as we are able."
Immediate impact on complaints handling
The service warned that social housing residents cannot file new complaints through its online systems while systems remain offline. The Ombudsman advised those who must raise new complaints to use the phone line or to email the organisation at info@housing-ombudsman.org.uk.
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End the scrambleRegulatory notification and consumer cautions
The Housing Ombudsman Service notified the Information Commissioner's Office (ICO) of the incident. It also warned tenants and leaseholders to be wary of potential scams when they receive unsolicited messages, recommending that individuals exercise their usual caution, "Do not disclose personal information unless you are confident of the identity of the requester and report any suspicious activity to the relevant organisation or authorities."
Public sector cybersecurity context
The incident follows other recent public‑sector IT problems cited by the service. In March, Companies House was forced to take its WebFiling service offline to fix a security flaw that had exposed companies' information since October 2025. Two months earlier, in January, the United Kingdom announced a new cybersecurity strategy backed by more than £210 million ($283 million) to boost cyber defenses across government departments and the wider public sector.
What this means for social housing residents, social landlords, and the affected service provider
- Social housing residents: Those seeking to lodge new complaints will need to use the phone line or the provided email address until online filing is restored; they should also be alert for unsolicited communications and avoid disclosing personal information unless they can verify the sender.
- Social landlords and managers: The interruption to the Ombudsman's case management system is likely to delay new complaint intake and could complicate ongoing dispute resolution where the Ombudsman's systems are a workflow dependency.
- The affected service provider: The supplier is working with the Ombudsman as part of a containment and fact‑finding effort to establish the full scope of any data involved and to restore services.
Conclusion
The Housing Ombudsman Service says the incident has been contained and investigations are ongoing; the central outstanding fact is whether personal information was affected. While the watchdog works with its external supplier and has alerted the ICO, residents and leaseholders are left to rely on phone and email routes for new complaints and to exercise caution against potential scams. The Ombudsman has pledged further updates as investigations proceed.
