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Defense in Depth

Defense in Depth

By: David Spark Steve Zalewski Geoff Belknap
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Defense in Depth promises clear talk on cybersecurity's most controversial and confusing debates. Once a week we choose one controversial and popular cybersecurity debate and use the InfoSec community's insights to lead our discussion.2018-2024 Spark Media Solutions, LLC Politics & Government
Episodes
  • Simple Security Solutions That Deliver a Big Impact
    Feb 5 2026

    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
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    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.

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    33 mins
  • When Cybersecurity Marketing Fails to Reach the Buyer
    Jan 29 2026

    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.

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    31 mins
  • How Best to Prepare Your Data for Your Tools
    Jan 22 2026

    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.

    Show More Show Less
    27 mins
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