Defense in Depth

All links and images can be found on CISO Series.
Check out this post for the discussion that is the basis of our conversation on this week's episode, co-hosted by David Spark, the producer of CISO Series, and Edward Contreras, senior evp and CISO, Frost Bank. Joining them is their sponsored guest, Rob Allen, chief product officer, ThreatLocker.
In this episode:
Getting permissions right
The fundamentals that still fail
Know what you have
Simple controls, outsized impact
Huge thanks to our sponsor, ThreatLocker

Want real Zero Trust training? Zero Trust World 2026 delivers hands-on labs and
workshops that show CISOs exactly how to implement and maintain Zero Trust in real
environments. Join us March 4–6 in Orlando, plus a live CISO Series episode on March
6. Get $200 off with ZTWCISO26 at ztw.com.

All links and images can be found on CISO Series.
Check out this post by Patrick Garrity of VulnCheck for the discussion that is the basis of our conversation on this week's episode, co-hosted by David Spark, the producer of CISO Series, and Steve Zalewski. Joining them is Tom Doughty, CISO, Generate:Biomedicines.
In this episode: 
The 3Ms of product clarity
Buzzwords work because buyers aren't experts
Investor pressures distort messaging
Threading the needle
Huge thanks to our sponsor, Alteryx

Alteryx is a leading AI and data analytics company that powers actionable insights that help organizations drive smarter, faster decisions. Alteryx One helps security, risk, and operations leaders cut hours of manual work to minutes, generate trusted insights at scale, and turn raw data into action faster than ever. Learn more at www.alteryx.com.

All links and images can be found on CISO Series.
Check out this post for the discussion that is the basis of our conversation on this week's episode, co-hosted by David Spark, the producer of CISO Series, and Geoff Belknap. Joining them is sponsored guest Matt Goodrich, director of information security, Alteryx.
In this episode:
The integrity challenge
Zero trust for AI outputs
Guardrails over garbage
It looks good...
Huge thanks to our sponsor, Alteryx

Alteryx is a leading AI and data analytics company that powers actionable insights that help organizations drive smarter, faster decisions. Alteryx One helps security, risk, and operations leaders cut hours of manual work to minutes, generate trusted insights at scale, and turn raw data into action faster than ever. Learn more at www.alteryx.com.

All links and images can be found on CISO Series.
Check out this post for the discussion that is the basis of our conversation on this week's episode, co-hosted by me, David Spark, the producer of CISO Series, and Jerich Beason, CISO, WM. Their guest is Pam Lindemoen, CSO and vp of strategy, RH-ISAC.
In this episode:
From loudest to most trusted
Letting go of the win
Listening over proving
Beyond right and wrong
Huge thanks to our sponsor, Alteryx

Alteryx is a leading AI and data analytics company that powers actionable insights that help organizations drive smarter, faster decisions. Alteryx One helps security, risk, and operations leaders cut hours of manual work to minutes, generate trusted insights at scale, and turn raw data into action faster than ever. Learn more at www.alteryx.com.

All links and images can be found on CISO Series.
Check out this post for the discussion that is the basis of our conversation on this week's episode co-hosted by me, David Spark, the producer of CISO Series, and Edward Contreras, senior evp and CISO, Frost Bank. Joining us is Ejona Preci, group CISO, LINDAL Group.
In this episode: 
Consequence, not controls
The credibility gap
Defining the undefined
Expanding the mandate
A huge thanks to our sponsor, ThreatLocker

ThreatLocker makes Zero Trust practical. With Default Deny, Ringfencing, and Elevation Control, CISOs get real control that's easy to manage and built to scale. Stop threats before they execute and reduce operational noise without adding complexity. See how simple prevention can be at ThreatLocker.com/CISO.