A vulnerability disclosure policy (VDP), also referred to as a responsible disclosure policy, describes how an origanisation will handle reports of vulnerabilities submitted by ethical hackers. A VDP must thus be easily identifable via a simple way, a security.txt notice.

contact: <a href='mailto:cert@xillion.nl'>cert@xillion.nl</a>
Encryption: <a href='https://www.xillion.nl/wp-content/uploads/PGP-Key-cert-xillion.nl.public'>https://www.xillion.nl/wp-content/uploads/PGP-Key-cert-xillion.nl.public</a>
Preferred-Languages: en,nl,de