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Companies House Glitch: Millions of Businesses Exposed
14 Mar
Summary
- A glitch allowed editing of confidential business data on Companies House.
- Over five million companies were vulnerable to fraud and data alteration.
- The online filing service was temporarily closed for investigation.

Companies House experienced a major security incident when a glitch enabled users to edit the confidential data of other businesses. This vulnerability put over five million UK companies at risk of fraud. The bug permitted changes to director information and the uploading or deletion of fraudulent company accounts.
Following the discovery, Companies House temporarily closed its online filing service to investigate the issue. The incident raises serious security and GDPR concerns regarding the exposure of directors' personal information. Legal repercussions under the UK Computer Misuse Act 1990 could include up to five years imprisonment for malicious access.