The fastest way to reach us is email: [email protected]. We usually reply within one business day.
What to contact us about
- Corrections and questions about any guide — tell us the page and what looks wrong.
- Patch help — use the quote form on the patch-help page; we reply with a written quote within one business day.
- Press and partnerships — include a short description of what you have in mind.
Reporting a security issue
If you’ve found a vulnerability in this website or in the open-source checker, please email us with “Security” in the subject line and give us a reasonable chance to fix it before you share it publicly. Our contact details are also published at /.well-known/security.txt.
For problems with the checker’s code you can also open an issue on GitHub — but please don’t post security issues publicly.
What we can’t help with
We can’t check, test or access systems on behalf of someone who doesn’t own or administer them, and we don’t provide exploit code. If you think your organisation has been breached, contact an incident-response provider and, where relevant, your national CERT or data protection authority.