Your first link is incorrect, it should be: https://mijn.overheid.nl/.well-known/security.txt https://mijn.overheid.nl/.well-known/security.txt which redirect

Your first link is incorrect, it should be: https://mijn.overheid.nl/.well-known/security.txt https://mijn.overheid.nl/.well-known/security.txt which redirects to the second one.