HMRC UK Tax Authority · Vulnerability Disclosure

Hmrc Vulnerability Disclosure

Vulnerability disclosure

HMRC UK Tax Authority runs a coordinated vulnerability disclosure program on Hackerone. A machine-readable /.well-known/security.txt is served. A dedicated security contact is published.

GovernmentMaking Tax DigitalRegulatoryTaxUK
Program: Hackerone security.txt present

Disclosure Policy

Policy
https://www.gov.uk/help/report-vulnerability

Security Contact

Contact
https://hackerone.com/44c348eb-e030-4273-b445-d4a2f6f83ba8/embedded_submissions/new
Contact
https://www.gov.uk/contact/govuk

Source

Vulnerability Disclosure

Raw ↑ 
generated: '2026-07-11'
method: searched
probe: true
source: https://hmrc.gov.uk/.well-known/security.txt
policy:
- https://www.gov.uk/help/report-vulnerability
contact:
- https://hackerone.com/44c348eb-e030-4273-b445-d4a2f6f83ba8/embedded_submissions/new
- https://www.gov.uk/contact/govuk
evidence:
- source: https://hmrc.gov.uk/.well-known/security.txt
  kind: security.txt (live probe)