Security.txt file now mandatory for Dutch government websites
> The aim is that, for example, ethical hackers can immediately contact the right person or department to tackle the vulnerability.We added such a file years ago. There's still some security researchers ("bug hunters") not aware of the standard and email other email addresses (info@, invoice@, data-protection@). Nobody has ever used the GPG key we list in the security.txt file. The email address we list (security@) hasn't received any significant spam.