Websites prove their identity via certificates. { -brand-short-name } does not trust { $hostname } because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.
各个网站通过证书证明自己的身份。{ -brand-short-name } 不信任 { $hostname }，因其证书颁发者未知、证书为自签名的，或者服务器未发送正确的中间证书。