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Chad Dandar

Security Engineer

Cryptographic Services

Chad Dandar is a technical lead within Cisco's Cryptographic Services organization. Focused on compliance and education on topics related to Cryptographic and Public Key Infrastructure. He is a member of the CA/Browser Forum along with an admin of the Common Certificate Authority DataBase (CCADB). Being a member of these organizations gives Chad the opportunity to help steer the security posture not just for Cisco but for the digital world as a whole.

Articles

February 17, 2026

SECURITY

Changes to TLS clientAuth Certificates: Ensuring You’re Not Impacted

4 min read

Upcoming changes to public TLS client authentication certificates may affect Cisco users. Audit and update trust stores to ensure secure, uninterrupted services.