Take the tour ×  Looking at a certificate for a web-site (in
Windows/Google Chrome) I see it lists the following fields    •
Version   • Serial number   • Signature algorithm   • Issuer   •
Valid from   • Valid to   • Subject   • Public Key   • Basic
Constraints   • Certificate Policies   • CRL Distribution Points
• Enhanced Key Usage   • Key Usage   • Subject Alternative name
• Authority Information Access   • Thumbprint algorithm   •
Thumbprint  Under some circumstances, the browser conveys what
the problem may be.     • Certificate not yet valid/expired: In
this scenario either 'Valid From', or 'Valid To' is bad    •
Certificate for a different web-site: In this scenario 'Subject'
is bad  I remember being told that on a suspicious certificate
some fields should be verified manually/explicitly. I can't
remember which fields amongst the above are relevant, nor what
to look for in these fields.  For instance, what would happen if
the field "Basic Constraints" in the certificate is bad? Or if
the field "Ce