
Defense in Depth
by David Spark, Steve Zalewski, Geoff Belknap
Is this your podcast?Insights from recent episode analysis
Audience Interest
Podcast Focus
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Platform Reach
Insights are generated by CastFox AI using publicly available data, episode content, and proprietary models.
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Total monthly reach
Estimated from 8 chart positions in 8 markets.
By chart position
- 🇬🇧GB · Technology#1035K to 30K
- 🇮🇳IN · Technology#1491K to 10K
- 🇮🇱IL · Technology#4610K to 30K
- 🇹🇷TR · Technology#513K to 10K
- 🇮🇸IS · Technology#733K to 10K
- Per-Episode Audience
Est. listeners per new episode within ~30 days
7.8K to 32K🎙 Daily cadence·354 episodes·Last published 6d ago - Monthly Reach
Unique listeners across all episodes (30 days)
26K to 106K🇬🇧28%🇮🇱28%🇮🇳9%+5 more - Active Followers
Loyal subscribers who consistently listen
7.8K to 32K
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Reach across major podcast platforms, updated hourly
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* Data sourced directly from platform APIs and aggregated hourly across all major podcast directories.
On the show
From 10 epsHosts
Recent guests
Recent episodes
Market Confusion Is Responsible for the Biggest Gaps in Cybersecurity
Aug 27, 2026
Unknown duration
Will AI Replace Detection Roles in Cybersecurity?
Aug 20, 2026
Unknown duration
What Makes a Good AI Security Deployment?
Aug 13, 2026
Unknown duration
The Office Politics of Remediation
Aug 6, 2026
Unknown duration
Why is Preventative Security So Difficult?
Jul 30, 2026
Unknown duration
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| Date | Episode | Topics | Guests | Brands | Places | Keywords | Sponsor | Length | |
|---|---|---|---|---|---|---|---|---|---|
| 8/27/26 | Market Confusion Is Responsible for the Biggest Gaps in Cybersecurity | All links and images can be found on CISO Series Check out this post from Joe Head of RELEX Solutions 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 is Mary Rose Martinez, CISO, and vp of digital technology services, Marathon Petroleum Corporation. In this episode: Left behind A hypothetical sale The philosophy problem Stop shifting the problems A huge thanks to our sponsor, ActiveState ActiveState gives security and engineering teams a single governed source for open source software. With 79 million components built from source, continuously remediated, and delivered directly into the tools teams already use, ActiveState eliminates the CVE backlog and the developer toil that comes with it. Companies see a 60 to 99% reduction in CVEs and reclaim up to 30% of developer time. Learn more at activestate.com. | — | ||||||
| 8/20/26 | Will AI Replace Detection Roles in Cybersecurity? | All links and images can be found on CISO Series Check out this post from Caleb Sima of Whiterabbit for the discussion that is the basis of our conversation on this week's episode co-hosted David Spark, the producer of CISO Series, and Yaron Levi, CISO, Dolby. Joining is Adrian Ludwig, CSO, Rippling. In this episode: The messy middle The automatable part Where automation stops The influence gap A huge thanks to our sponsor, ThreatLocker ThreatLocker delivers Zero Trust Network Access and Zero Trust Cloud Access that verifies both user and device before granting access to specific applications. No broad access, nothing exposed, and no reliance on credentials alone. It's a smarter way to control access and reduce risk. Learn more at ThreatLocker.com/CISO. | — | ||||||
| 8/13/26 | What Makes a Good AI Security Deployment? | What Makes a Good AI Security Deployment? All links and images can be found on CISO Series Check out this post by Chris Matthews of UpGuard 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 Peter Liebert, CISO, Salesloft & Clari. In this episode: Non-determinism changes everything The foundation problem Nobody owns the whole problem The authorization gap A huge thanks to our sponsor, CoreView Attackers don't break into Microsoft 365. They log in and reconfigure it. When tenant configurations drift or get tampered with, recovery can take weeks and missed settings can reopen the door. The Cyber Resilience Framework for Microsoft 365 covers the five pillars, harden, govern, detect, respond, recover, and shows exactly where today's tools leave gaps. Download the free practical guide | — | ||||||
| 8/6/26 | The Office Politics of Remediation | 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 Dan Walsh, CISO, Datavant. Joining is our sponsored guest, Elizabeth Nammour, founder and CEO, Teleskope. In this episode: Data ownership before automation A shared vocabulary for agent risk Maturing from crawl to run Trust earns automation its place A huge thanks to our sponsor, Teleskope Most DSPMs stop at finding the risk. Teleskope fixes this: it automatically finds sensitive data, including IP documents or board decks, and remediates exposure across cloud, SaaS, and AI environments natively, with human-in-the-loop controls, improving your team's efficiency tenfold. Trusted by Ramp, Polymarket, and Chevron Phillips, and more. teleskope.ai | — | ||||||
| 7/30/26 | Why is Preventative Security So Difficult? | All links and images can be found on CISO Series Prevention in cybersecurity is a lot like flossing: everyone knows they should do it, but few do it enough. What's stopping us? Check out this post by Ross Haleliuk of Venture in Security 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 Deneen DeFiore, vice president & chief information security officer, United Airlines. In this episode: The sponsorship gap One strike and you're out Policy without position Prevention isn't static A huge thanks to our sponsor, CoreView Attackers don't break into Microsoft 365. They log in and reconfigure it. When tenant configurations drift or get tampered with, recovery can take weeks and missed settings can reopen the door. The Cyber Resilience Framework for Microsoft 365 covers the five pillars, harden, govern, detect, respond, recover, and shows exactly where today's tools leave gaps. Download the free practical guide | — | ||||||
| 7/23/26 | Identity and Access Management (IAM) in an Agentic AI World | All links and images can be found on CISO Series Check out this post by Tomás Maldonado, CISO, NFL, 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 Yaron Levi, CISO, Dolby. Joining is Will Gregorian, vp of information technology & security, Galileo Medical. In this episode: From who to what The manipulation problem Cryptographic accountability The audit gap A huge thanks to our sponsor, ActiveState ActiveState gives security and engineering teams a single governed source for open source software. With 79 million components built from source, continuously remediated, and delivered directly into the tools teams already use, ActiveState eliminates the CVE backlog and the developer toil that comes with it. Companies see a 60 to 99% reduction in CVEs and reclaim up to 30% of developer time. Learn more at ActiveState.com. | — | ||||||
| 7/16/26 | AI securitycloud workspace+3 | Rajan Kapoor | — | — | AI agentsO365+5 | Material Security | 33m 53s | ||
| 7/9/26 | AI securityhuman-in-the-loop+3 | Howard HoltonAdam Glick | Cortex CloudUpwind Security+2 | — | AI securityhuman-in-the-loop+5 | Palo Alto Networks | 35m 36s | ||
| 7/2/26 | cybersecurity vendorsmarket gaps+3 | Ajit Girn | CISO SeriesREFLEX Solutions+1 | — | cybersecurityvendors+3 | ThreatLockerCODE | 33m 56s | ||
| 6/25/26 | cybersecuritycloud security+3 | George FinneySean Walls | CISO SeriesUniversity of Texas System+1 | — | attackerscybersecurity+5 | Native Security | 27m 40s | ||
Want analysis for the episodes below?Free for Pro Submit a request, we'll have your selected episodes analyzed within an hour. Free, at no cost to you, for Pro users. | |||||||||
| 6/18/26 | cyber mediasuccess in media+4 | Dave BittnerGraham Cluley+1 | Cortex CloudCISO Series+3 | — | cyber mediapodcasting+5 | Palo Alto NetworksCortex | 55m 27s | ||
| 6/11/26 | CISO decision-makingsales strategies+3 | Howard HoltonTyler King | CISO SeriesGigaOm | — | CISOsales+4 | Material Security | 31m 21s | ||
| 6/4/26 | cybersecuritybest practices+4 | Davi OttenheimerJoshua Copeland | CISO SeriesFlying Penguin+1 | — | cybersecuritybest practices+5 | ThreatLockerCISO | 33m 57s | ||
| 5/28/26 | cloud securityAI security+4 | Dan Benjamin | Cortex CloudCISO Series | — | cloud securityAI agents+5 | Palo Alto Networks | 33m 22s | ||
| 5/21/26 | vendor selectioncontract evaluation+3 | Paul Guerra | CISO Series | — | vendor selectioncontract+3 | Native Security | 26m 46s | ||
| 5/14/26 | cybersecuritystartups+3 | Steve Jensen | CISO SeriesCyber Risk Alliance+2 | — | cybersecurityCISO+5 | Material Security | 26m 40s | ||
| 5/7/26 | Breaking the Reactive Cycle of Cybersecurity | 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 Steve Zalewski. Joining us is our sponsored guest, Rob Allen. In this episode: The vulnerable stack Changing the structural economics Change the terrain The cost-benefit equation 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. | — | ||||||
| 4/30/26 | How Do You Know If Your Backups Will Survive a Ransomware Attack? | 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 Steve Zalewski. Joining us is our sponsored guest, Heath Renfrow, co-founder, Fenix24. In this episode: Knowing which systems to save first Recovery is a business conversation, not an IT ticket Not all systems are created equal Recovery knowledge as a governed asset A huge thanks to our sponsor, Fenix24 Fenix24 is the world's leading breach recovery firm, providing rapid ransomware restoration, full asset visibility, and threat informed hardening. Alongside expert recovery services, Fenix24 delivers ongoing managed protection that secures backups, infrastructure, and critical controls, helping organizations stay resilient, recoverable, and prepared for modern cyber threats. Learn more at fenix24.com. | — | ||||||
| 4/23/26 | What Makes a Successful Security Vendor Demo? | What Makes a Successful Security Vendor Demo? All links and images can be found on CISO Series. Check out this post from Adam Palmer 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 is Ken Beasley, BISO, Kaiser Permanente. In this episode: Show me the problem, not the product Walking in blind Discovery is the demo Define the use case, set the clock A huge thanks to our sponsor, Fenix24 Fenix24 is the world's leading breach recovery firm, providing rapid ransomware restoration, full asset visibility, and threat informed hardening. Alongside expert recovery services, Fenix24 delivers ongoing managed protection that secures backups, infrastructure, and critical controls, helping organizations stay resilient, recoverable, and prepared for modern cyber threats. Learn more at fenix24.com. | — | ||||||
| 4/16/26 | Should You Use Native or 3rd Party Cloud Management Tools? | Should You Use Native or 3rd Party Cloud Management Tools? All links and images can be found on CISO Series. Check out this post from Steve Zalewski 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 us is their sponsored guest, Gal Ordo, co-founder and CPO, Native. In this episode: More tools, more problems A gap in design Catching what slips through Competence over complexity A huge thanks to our sponsor, Native Security Native makes secure-by-design inherent to how the cloud operates. It's the control plane for built-in cloud security, unifying and governing native controls, so security intent is defined once and applied consistently across providers. Learn more at native.security. | — | ||||||
| 4/9/26 | How Should We Measure the Performance of a CISO? | How Should We Measure the Performance of a CISO? All links and images can be found on CISO Series. Check out this post from the cybersecurity subreddit 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 them is Jason Richards, vp, information security, CHG Healthcare. In this episode: Likability as a career strategy The storytelling gap How the math actually gets done The unofficial scorecard 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. | — | ||||||
| 4/2/26 | How to Be Less Busy and More Effective in Cyber | 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 Ross Young, co-host, CISO Tradecraft. Joining them is Dan Walsh, CISO, Datavant. Be sure to check out Ross's book Cybersecurity's Dirty Secret: Why Most Budgets Go to Waste. In this episode: Patterns hiding in plain sight Activity vs. advancement The human cost Frameworks about frameworks A huge thanks to our sponsor, Fenix24 Fenix24 is the world's leading breach recovery firm, providing rapid ransomware restoration, full asset visibility, and threat informed hardening. Alongside expert recovery services, Fenix24 delivers ongoing managed protection that secures backups, infrastructure, and critical controls, helping organizations stay resilient, recoverable, and prepared for modern cyber threats. Learn more at fenix24.com. | — | ||||||
| 3/26/26 | How to Engage With a CISO When They Express Interest | 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 Steve Zalewski. Joining them is Adam Palmer, CISO, First Hawaiian Bank. Be sure to check out David's book, Three Feet from Seven Figures: One-on-One Engagement Techniques to Qualify More Leads at Trade Shows. In this episode: Lead with insight, not persuasion Recognize the opportunity when it arrives Strategy over features Keep it efficient A huge thanks to our sponsor, Endor Labs Discover how AI coding agents are reshaping software supply chain risk in the State of Dependency Management. Original research from Endor Labs shows 49% of dependency versions have known vulnerabilities (and that 34% don't actually exist). Get the report to see how "shadow AI" is reshaping attack surfaces. Learn more at endorlabs.com. | — | ||||||
| 3/19/26 | Who is Responsible for the Conflict Between Security and Developers? | 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 Steve Zalewski. Joining is their sponsored guest, Matt Brown, solutions architect, Endor Labs. In this episode: The development disconnect Functionality first, security second The incentive problem Speed as the common ground A huge thanks to our sponsor, Endor Labs Discover how AI coding agents are reshaping software supply chain risk in the State of Dependency Management. Original research from Endor Labs shows 49% of dependency versions have known vulnerabilities (and that 34% don't actually exist). Get the report to see how "shadow AI" is reshaping attack surfaces. Learn more at www.endorlabs.com. | — | ||||||
| 3/12/26 | Are Your Security Tools Creating More Work for Your Team? | All links and images can be found on CISO Series. Check out this post by Caleb Sima 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 Evan McHenry, CISO, Robinhood. In this episode: The information paradox Setting realistic expectations Prioritization over noise The cart before the horse Huge thanks to our sponsor, Endor Labs Discover how AI coding agents are reshaping software supply chain risk in the State of Dependency Management. Original research from Endor Labs shows 49% of dependency versions have known vulnerabilities (and that 34% don't actually exist). Get the report to see how "shadow AI" is reshaping attack surfaces. | — | ||||||
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Chart history for Defense in Depth
Peaked at #46 in IL, currently #46 in IL.
| Market | Genre | Peak | Current | Trend |
|---|---|---|---|---|
| IL | — | #46 | #46 | — |
| TR | — | #51 | #51 | — |
| IS | — | #73 | #73 | — |
| TH | — | #99 | #99 | — |
| United Kingdom | — | #103 | #103 | — |
| PL | — | #131 | #131 | — |
| India | — | #149 | #149 | — |
| PH | — | #189 | #189 | — |
Chart Positions
8 placements across 8 markets.
Chart Positions
8 placements across 8 markets.