@spike666: I can't access the following sites, unless I bypass the security warning:
- https://www.portaldasfinancas.gov.pt/
- https://app.seg-social.pt/
- https://portalcontraordenacoes.ansr.pt
- https://www.ctt.pt
They all use a certificate issued by MULTICERT SSL. The page information states the certificate is invalid, but the Certificate Status is "OK" in certificate properties states