I have a certificate which uses Equifax secure certificate authority, however this shows as Not in trust store. I checked the trust store in firefox and chrome and they both have the certificate. Here is the certificate:
Subject Equifax / Equifax Secure Certificate Authority Not in trust store
Valid until Wed Aug 22 16:41:51 UTC 2018 (expires in 4 years and 4 months)
Key RSA 1024 bits WEAK
Issuer Equifax / Equifax Secure Certificate Authority Self-signed
Signature algorithm SHA1withRSA
Is this just because it's weak key or because the Trust store is not up to date?