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
-
Listen Now
EPISODE 473
Broadcast Date:
March 28, 202510 minutes
Podcasts UpcomingRoot Causes 473: Does Security Software Lack Creativity?
Jason reports on a 2024 Black Hat keynote about how modern software development practices inhibit innovation and invention.
-
Watch Now
REGISTER
A live webinar hosted by Sectigo.
60 minutes
Webinars UpcomingQ1 2025 Pulse Webinar
Join us for our quarterly Pulse webinar, where we cover the latest product and compliance news and how these events might impact you and your business.
-
Learn More
Why you need a crypto center of excellence today
Blog Post from Sectigo
Blog Posts Mar 06, 2025A CryptoCOE standardizes encryption, enhances security, and prepares businesses for quantum threats with centralized cryptographic governance.
-
Listen Now
EPISODE 475
Broadcast Date:
March 6, 202518 minutes
Podcasts Mar 06, 2025Root Causes 475: Can Your AI Scheme Against You?
It's the stuff of science fiction! Interesting research shows how today's AI technology is capable of lying to and scheming against its human owners in service of its goals.
-
Learn More
The all-or-nothing cybersecurity fallacy: why progress matters
Blog Post from Sectigo
Blog Posts Mar 03, 2025Cybersecurity isn’t all or nothing. Incremental improvements, like automation and shorter SSL/TLS lifespans, reduce risk and strengthen defenses.
-
Listen Now
EPISODE 474
Broadcast Date:
March 3, 202520 minutes
Podcasts Mar 03, 2025Root Causes 474: Explaining Shor's Algorithm
We talk a lot about Shor's Algorithm in our discussion of post quantum cryptography (PQC). In this episode Jason explains Shor's algorithm for non-quantum physicists.
-
Listen Now
EPISODE 472
Broadcast Date:
February 26, 202511 minutes
Podcasts Feb 26, 2025Root Causes 472: AI Offensive Modeling
AI tools are now available to perform red-teaming activity for DevSecOps. Such tools are soon to be table stakes in the constantly escalating IT security arms race. Join us to learn more.
-
Learn More
Deliberate delayed revocation: a security risk
Blog Post from Sectigo
Blog Posts Feb 25, 2025Deliberate delayed revocation weakens security and trust. Sectigo calls on CAs to prioritize immediate revocation and protect the integrity of the web PKI
-
Listen Now
EPISODE 471
Broadcast Date:
February 24, 202521 minutes
Podcasts Feb 24, 2025Root Causes 471: ACME for PQC
In this episode, guest Alexandre Giron explains what is needed to support pos quantum cryptography (PQC) with ACME.