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Defensive Security Podcast - Malware, Hacking, Cyber Security & Infosec
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Latest episodes
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PHP2Shell and a Big CA Compromise
October 23, 2026 · 29 minThis week was a tale of two stories: the PHP2Shell vulnerabilities and the compromise of several certificates issued by CA eMudhra in India. Timestamps00:00 — A wild week in security news02:50 — PHP vulnerabilities and the disclosure…
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PHP2Shell Bugs and The Impact for Defenders | Ben Harris
October 21, 2026 · 11 minThe newly disclosed PHP2Shell vulnerabilities (CVE-2026-109618 and CVE-2026-109619) are as serious as everyone feared, and Ben Harris of watchTowr joins Dennis Fisher to discuss their long-term impact.Timestamps00:00 - Introduction and why…
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When Hackers Meet Policymakers | Beau Woods
October 20, 2026 · 39 minCybersecurity policy can stall when technical experts and lawmakers speak different languages. Beau Woods, CEO and founder of Stratigos Security joins Lindsey O’Donnell-Welch to explain how Hackers on the Hill brings cybersecurity…
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Hacked Fridges, North Korean Laptop Farms, and Mercenary Spyware
October 16, 2026 · 43 minThis week, we're talking about hacked refrigerators, the FBI disrupting a North Korean laptop farm run by Famous Chollima, and a stealthy network of ads used to deliver mercenary spyware via a zero-click exploit. imestamps0:00 Intro & new…
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The ClickFix Epidemic and AI-Enabled Attacks | John Hammond
October 13, 2026 · 46 minJohn Hammond of Huntress joins Dennis Fisher to dive into the ClickFix attack episdemic, how these attacks work, what the payloads are, and what individuals and organizations can do to protect themselves against them.
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Why Patching Faster Doesn't Work, Ransomware Negotiation War Stories, and the NSA View of AI Threats
October 11, 2026 · 42 minThis week we talk about all the news from THREATCON1, including why the idea of just patching faster doesn't work, how analysts handle threat actor communications in ransomware incidents, and what the NSA thinks of AI threats.
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Catch Me If You Can with Shea Serrano!
October 6, 2026 · 51 minBestselling author, podcaster, and all around great guy Shea Serrano joins Dennis Fisher and Lindsey O’Donnell-Welch to explore why Catch Me If You Can is more than a con-artist story: it’s a hacker classic and master class in social…
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Edge Devices Under Attack, a Threatcon Preview, and Communication Breakdowns
October 2, 2026 · 32 minToday we have for you a buffet of zero days being exploited in edge security products, including Citrix and Fortinet, then we discuss the importance of communications from vendors when bad things happen, and finally we preview VulnCheck's…
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The Citrix NetScaler Zero Day Saga | Ben Harris
October 2, 2026 · 22 minBen Harris of watchTowr joins Dennis Fisher to walk through the Citrix NetScaler zero days that emerged over the weekend, from first detection of exploitation to reporting to finally some patches and why vendor communication is so vital in…
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The Malware That Asks AI What to Do Next | Ryan Fetterman
September 29, 2026 · 31 minRyan Fetterman from Cisco Talos sits down with Decipher’s Lindsey O’Donnell-Welch to talk about ClosedQuorum, the first reported malware binary with an autonomous command-and-control. They talk about the wide range of ways threat actors…
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FBI Hack Fallout, EvilTokens Takedown, and the F5 Zero Day
September 27, 2026 · 32 minThis week we dig into the ShinyHunters hack of the FBI and what it means not just for the FBI personnel but for the attackers, then we discuss the disruption of the EvilTokens phishing operation by Microsoft, and finally we talk about the…
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Assessing AI Model Security From the Outside In | Matt Fredrikson
September 22, 2026 · 37 minThe security and reliability of the code in AI models is a huge question mark, because the models are black boxes that aren't accessible to outsiders. Matt Fredrikson, professor at Carnegie Mellon University and founder of Gray Swan AI…
About the show
Every week, Dennis Fisher and Lindsey O'Donnell-Welch, the editors of Decipher, bring you exclusive, in-depth conversations with security researchers, CISOs, founders, and security experts to hellp you understand the threat landscape and better protect your organizations.