Tim Callan

Chief Compliance Officer
As Chief Experience Officer, Tim Callan leads efforts to optimize the customer journey across all aspects of the business. Tim has more than 20 years of experience as a strategic marketing and product leader for successful B2B software and SaaS companies, with 15 years of experience in the SSL and PKI technology spaces.

Tim Callan has over 20 years of experience in the SSL and PKI technology spaces. Tim leads Sectigo's conformance with industry and regulatory requirements including browser root programs, WebTrust, CA/Browser Forum, and more. Tim is instrumental in driving initiatives to improve certificate agility and successful issuance. A founding member of the CA/Browser Forum and current vice-chair for one of its working groups, Tim is creator and co-host of Root Causes: A PKI and Security Podcast, the world’s most popular podcast dedicated to digital certificates. With 400+ episodes published, Tim is on the forefront of explaining trends that will be essential to the IT professionals, including shortening certificate lifespans and the coming change to post-quantum cryptography.

Recent posts by Tim Callan

October 1, 202611:00 AM EDT60 min

Join us for a practical session on what's breaking, why it's breaking, and how to get ahead of the next stepdown before it hits. We’re exposing gaps in certificate inventories, ownership and DCV workflows, and we’ll cover the real cost of manual renewal cycles, how automation takes away the burden, and how to turn this renewal surge into a dry run for 100-day certificates.

September 4, 202611 min

TLS certificates from CA/Browser Forum CAs are not the only server certificates in the WebPKI. eIDAS QWACs are treated as server certificates by the major browsers. We see clear progress toward post quantum cryptography (PQC) for TLS by way of the Merkle Tree Certificate (MTC) architecture. But what is the path to PQC for eIDAS? We examine this question.