Über mögliche Kennzahlen einer PKI:
PKI information includes the number of certificate requests, the number of certificates issued, the number of revocation requests, the number of certificates revoked, service-level statistics, and the relative numbers based on certificate types. Other pertinent information might be certificate misuse or other agreement violations.
Failure to properly manage your SSL certificates will have an additional consequence to your customer support organization. If customers visit an Internet website and see a security warning because of an expired SSL certificate, they may have concerns about whether their private data are at risk. Either they will abandon the site or they may pick up the phone and call your customer support linke to ask about what caused the situation.
For example, you may need an external commercially issued extended validation certificate for your e-commerce site at RSA248 with SHA256 where your internal server may be perfectly happy with an internally issued standard SSL certificate at RSA248 with SHA1 (for at least a little while longer).