Companies House, the UK's official business registration agency, has experienced a significant data security breach that allowed unauthorized access to confidential company information.

The technical glitch enabled logged-in users to view and edit other companies' registration details without the consent or knowledge of the affected businesses. The vulnerability appears to have compromised the integrity of the database that maintains official records for millions of UK companies.

Companies House has advised all registered businesses to review their records immediately to check for any unauthorized changes or modifications. The agency has not yet disclosed how many companies may have been affected by the breach or the duration of the security vulnerability.

The incident raises concerns about data security at the government agency, which maintains sensitive financial and corporate information for businesses across the United Kingdom. Companies House serves as the central repository for statutory filings, including annual accounts, director appointments, and other regulatory documents.

The breach highlights potential risks to business data integrity and privacy within government systems. Companies House has not provided a timeline for when the security issue was discovered or fully resolved.