ST

security.txt history

A historical index of security.txt files across the web.

security.txt

gchq.gov.uk

Collected on 2026-10-23 00:03 UTC.

View rawOpen on the domain
Canonical: https://www.gchq.gov.uk/.well-known/security.txt
Contact: mailto:security@ncsc.gov.uk
Encryption: https://www.gchq.gov.uk/sites/default/files/2026-09/ncsc_public_2028-09-11.asc
Expires: 2028-09-11T00:00:00Z
Policy: https://vulnerability-reporting.service.security.gov.uk/
Preferred-Languages: en

This file is shown exactly as published by the domain, as collected by the securitytxthistory crawler. 307 bytes · 7 lines.

Collection details

HTTP 200/.well-known/security.txttext/plain; charset=utf-81 redirect
Collected URL

https://www.gchq.gov.uk/.well-known/security.txt

SHA-256

f67e1deac90b1ad1840199fae352b6c63b0f083e22d1f935656af4a5f00373d6

Redirects

  1. 301https://gchq.gov.uk/.well-known/security.txt
  2. 200https://www.gchq.gov.uk/.well-known/security.txt