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Security Glitch Exposes Companies House Data for Months

3/17/2026

Summary

Story summary

Companies House says the security glitch may have allowed unauthorized access to sensitive data for five months.
The WebFiling service was temporarily closed after the issue was discovered on March 13, 2026.
The vulnerability stemmed from an October 2025 update, with no passwords compromised.
While investigations continue, Companies House has advised firms to verify their details.
Dan Neidle of Tax Policy Associates warned that the situation could lead to fraud if unaddressed.

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Story summary

Companies House says the security glitch may have allowed unauthorized access to sensitive data for five months.
The WebFiling service was temporarily closed after the issue was discovered on March 13, 2026.
The vulnerability stemmed from an October 2025 update, with no passwords compromised.
While investigations continue, Companies House has advised firms to verify their details.
Dan Neidle of Tax Policy Associates warned that the situation could lead to fraud if unaddressed.