Add the right security headers to nginx because we all like to get an “A” in securityheaders.com

After auditing quite a few sites, I tested my own site for security headers. And guess what happened?

Wow, this had to be fixed :D

I just added:

# Set security headers
add_header X-Frame-Options SAMEORIGIN;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header Content-Security-Policy "default-src 'self'";
add_header Referrer-Policy "no-referrer";

# Set HSTS to 365 days
add_header Strict-Transport-Security 'max-age=31536000; includeSubDomains; preload' always;

I will add the new Permissions-Policy later, once I read about -and hopefully understand- it.