Ten Risks of PKI: What You’re not Being Told about Public Key Infrastructure. Real security is never that simple, and that is especially true with PKI.
You can download it from the following link: https://packetstormsecurity.com/files/download/11233/pki-risks-ft.txt
Source: https://packetstormsecurity.com/files/11233/pki-risks-ft.txt.html