Decipher Security Podcast
by Decipher
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.
Hosts
- Dennis Fisher
- Lindsey O’Donnell-Welch
Decipher
Oct 6, 2026Episodes (388)

Catch Me If You Can with Shea Serrano!
Oct 6, 202651m
Bestselling 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 cl

Edge Devices Under Attack, a Threatcon Preview, and Communication Breakdowns
Oct 2, 202631m
Today 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 p

The Citrix NetScaler Zero Day Saga | Ben Harris
Oct 2, 202622m
Ben 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 communica

The Malware That Asks AI What to Do Next | Ryan Fetterman
Sep 29, 202630m
Ryan 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 wa

FBI Hack Fallout, EvilTokens Takedown, and the F5 Zero Day
Sep 27, 202632m
This 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

Assessing AI Model Security From the Outside In | Matt Fredrikson
Sep 22, 202637m
The 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

The Real Story on AI Security Live From LabsCon!
Sep 18, 202629m
Dennis joins from the last LabsCon conference, which featured amazing keynotes from Prof. James Mickens on AI reality and myths, Katie Moussouris on why humans are more vital than ever in security, and Dino Dai Zovi on u

The Vulnpocalypse Myth | Jeremiah Grossman
Sep 15, 202652m
You've heard all of the hysteria around the vulnpocalypse caused by AI-assisted bug hunting and the shrinking time to exploit window. Now Jeremiah Grossman dispels those myths and shows exactly what the data reveals abou

Anthropic's Threat Report, AI's Effect on Cybercrime, and How 9/11 Changed Cybersecurity
Sep 11, 202658m
This week we dive into Anthropic's new threat intelligence report, how cybercriminals are using AI in their campaigns, and the profound effect that 9/11 had on the cybersecurity industry. Then, Dennis is joined by Ryan N

Securing Communications in an AI-Assisted World | Christine Gadsby
Sep 7, 202645m
Christine Gadsby of BlackBerry, a longtime security executive, joins Dennis to talk about her extensive experience in cybersecurity, the evolution of security practices, the challenges of securing mobile communications,

Microsoft Teams Phishing, a Botnet Takedown 23 Years in the Making, and The Cuckoo's Egg's Lessons
Sep 4, 20261h 2m
It's our one year anniversary! This week we talk about the highlights of the last year, a new high-level phishing campaign that uses Microsoft Teams as an initial access vector, and the takedown of the ancient Sality P2P

Cybercrime Disruption: Making a “Real Impact” | Ken Bagnall
Sep 1, 202627m
Ken Bagnall, founder and CEO of Silent Push, talks about the August National Security Presidential Memorandum (NSPM) on transnational cyber-enabled crime, how organizations can make “real impact” with cybercriminal disru

TeamPCP Arrests, the QTFY Attacks, and the OpenAI Post-Mortem
Aug 28, 202640m
This week we discuss the two arrests in Australia of alleged members of the TeamPCP cybercrime group that has targeted the open source ecosystem, the US government's disclosure of intrusion activity by the Chinese QTFY t

The Future of Surveillance and Privacy in the Age of AI | Nicole Ozer
Aug 25, 202636m
Nicole Ozer, who took the helm this year as the new executive director at the Electronic Frontier Foundation (EFF), talks to Lindsey O’Donnell-Welch about the fine line between AI empowering us and undermining our rights

The Politics of Hacking Back, the Origins of ExploitGym, and Water Plant Attacks
Aug 21, 202644m
This week we discuss the new White House memo on using private sector operators in offensive cyber operations, Lindsey's deep dive into the origins of the ExploitGym AI benchmark, and the rash of attacks on water utiliti

How AI is reshaping attacker and defender behavior | Adam Meyers
Aug 19, 202653m
Adam Meyers of CrowdStrike joins Dennis to dive into the rapidly changing nature of both attacker and defender behavior in the AI age and how organizations need to shift their priorities to combat agentic threats. Then w

The truth about AI model security and what's coming next | Gary McGraw
Aug 10, 202639m
AI security pioneer and machine learning expert Gary McGraw helps Dennis separate the facts from fiction about the recent OpenAI, Meta, and Anthropic model escapes, what the real risks to enterprises are from agentic AI,

More AI Model Escapes and New Backdoored Chinese Routers
Aug 5, 202637m
We can't go a week without an AI model escaping its bounds, and this week we talk about a new test by the AI Security Institute in which OpenAI and Anthropic models escaped the evaluation environment and tried to start a

The OpenAI and Hugging Face Intrusion Wasn't Enough, So Now Anthropic Wants In
Jul 31, 202635m
This week we talk about the OpenAI-Hugging Face incident and what it means for those companies and the way that AI models are tested, and then we discuss Anthropic's entry into the race with its own admission that some o

Project Hail Mary is a Hacker Movie. Amaze Amaze Amaze.
Jul 29, 202648m
Project Hail Mary is many things: an instant classic, a heartwarming buddy movie, a brilliant scientific tale. And it's also a pure hacker movie. Wendy Nather and David Mortman join Dennis and Lindsey to talk about Rylan

How Cybercrime Groups Have Become APTs | Michael Sweeney
Jul 27, 202648m
Cybercrime has become professionalized and industrialized to the point that these groups are essentially at the level of state-backed APTs. Mike Sweeney of Silent Push joins Dennis Fisher to talk about this evolution, ho

JADEPUFFER: The Era of Agentic Ransomware Has Begun | Michael Clark
Jul 20, 202626m
Michael Clark, director of Threat Research at Sysdig, talks about a recent LLM-driven extortion campaign dubbed JADEPUFFER, touching on how the team discovered it, how attackers’ “intent is now legible,” and what that me

The Cursor Bug Drama, Microsoft's Massive Patch Tuesday, and Scattered Spider Takes a Hit
Jul 17, 202640m
This week we have some old-school disclosure drama when a researcher used full disclosure after months of silence from Cursor, then we discuss the enormous Patch Tuesday from Microsoft--662 bugs--and what it might mean g

Industrial Cybersecurity and Malware Archaeology with Lesley Carhart
Jul 14, 202636m
Old malware like Conficker never really dies, and in industrial control and SCADA environments it can live forever undisturbed. Lesley Carhart of Dragos joins Dennis Fisher to talk about the myriad challenges of incident

Our AI Coding Future with Jack Cable
Jul 7, 202623m
Jack Cable, co-founder and CEO of Corridor and a former senior technical advisor at CISA, discusses AI's impact on cybersecurity, vulnerability discovery, and coding practices.