UK’s Companies House confirms security flaw exposed business data

BleepingComputer

March 16, 2026 at 5:07 PM

Overview

Companies House, the British agency responsible for company registration in the UK, recently confirmed that a security flaw in its WebFiling service exposed sensitive business information since October 2025. The agency temporarily took the service offline on Friday to address the issue, which raised concerns about the privacy of companies' data. While they have since restored the service, the breach could have serious implications for businesses relying on the registry for compliance and reporting. Companies should review their security practices and remain vigilant about potential misuse of their exposed information. This incident underscores the need for robust security measures in public-facing services.

Key Takeaways

Affected Systems: WebFiling service of Companies House, UK business data
Action Required: Service was taken offline to fix the security flaw; specific patches or updates not mentioned.
Timeline: Ongoing since October 2025

Original Article Summary

Companies House, a British government agency that operates the registry for all U.K. companies, says its WebFiling service is back online after it was closed on Friday to fix a security flaw that exposed companies' information since October 2025. [...]

Impact

WebFiling service of Companies House, UK business data

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Ongoing since October 2025

Remediation

Service was taken offline to fix the security flaw; specific patches or updates not mentioned.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Data Breach.

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