Featured Contributor
Tim Callan
Chief Compliance Officer at Sectigo
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 from Tim Callan
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Join us for our quarterly Sectigo Pulse webinar, where we cover the latest product & compliance news & how these events might impact you & your business.
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EPISODE 436
Broadcast Date:
October 29, 202410 minutes
Podcasts Oct 29, 2024Root Causes 436: Formal Proofs
Formal proofs are critical to cryptography. We discuss how better processes and AI can accelerate formal proofs of cryptographic concepts.
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EPISODE 435
Broadcast Date:
October 25, 202419 minutes
Podcasts Oct 25, 2024Root Causes 435: The PQC "Q Day" Is Not That Simple
We explain how radically oversimplified the concept of PQC "Q day" really is.
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EPISODE 434
Broadcast Date:
October 22, 202412 minutes
Podcasts Oct 22, 2024Root Causes 434: Did Researchers Break AES Using Quantum Annealing?
Reports suggest Chinese researchers used a quantum annealing computer to break AES. We clarify the findings and discuss the potential implications.
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EPISODE 433
Broadcast Date:
October 17, 202410 minutes
Podcasts Oct 17, 2024Root Causes 433: Will AI Eat All the Electricity?
News reports claim Chinese researchers broke AES with a quantum annealing computer. We clarify the details and talk about the implications of this reported discovery.
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EPISODE 432
Broadcast Date:
October 14, 202426 minutes
Podcasts Oct 14, 2024Root Causes 432: Apple Floats New Short-lived Certificate Proposal
Apple recently floated a draft CABF ballot for commentary that steps down maximum term for SSL certificates to 45 days by 2027.
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EPISODE 431
Broadcast Date:
October 11, 202428 minutes
Podcasts Oct 11, 2024Root Causes 431: New Mozilla Proposal to Combat Delayed Revocation
Deliberate delay of mandatory revocations has plagued the WebPKI in 2024. A new proposed policy from Mozilla stands to eliminate most of this behavior.
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EPISODE 429
Broadcast Date:
October 8, 20247 minutes
Podcasts Oct 08, 2024Root Causes 429: ServiceNow Outage Due to Expired Root Certificate
A ServiceNow private CA root expired, creating outages across hundreds of enterprises. We explain what appears to have gone on.
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EPISODE 428
Broadcast Date:
October 4, 202417 minutes
Podcasts Oct 04, 2024Root Causes 428: .MOBI Attack Puts WHOIS-based DCV into Question
White hat researchers managed to take over WHOIS for the .mobi TLD, foretelling the death of WHOIS as an email source for Domain Control Validation (DCV).