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
Jun 26, 2026Recent reviews on Apple Podcasts (1)
Like it but HORRIBLE audio issues
Particularly in ep12 there are multiple examples where there are people talking over one another and then periods of silence. There’s some very annoying background noise like someone has a TV or Radio on while recording. Dudes. Clean it up... 🙃
btaroli ·
Episodes (361)

The Gaslight macOS Backdoor, Cisco Zero Day Exploit, and Operation Endgame
Jun 26, 202631m
It's a non-AI podcast! This week we dig into the new Gaslight macOS implant that tries to trick security researchers with some anti-forensics techniques, then we discuss the Operation Endgame takedown of some malware inf

How Much Do Data Breaches Really Cost? | Alex Pinto
Jun 16, 202641m
Alex Pinto, one of the lead authors of the Verizon Data Breach Investigations Report, joins Dennis to talk about his organization's newest publication, the Breach Impact Study, which digs into the real world cost of brea

The Shrinking Exploit Window, Patch Schedule Changes, and the Vulnpocalypse
Jun 12, 202632m
This week was blessedly free of any major supply chain compromises, so we start by talking about new research from Anthropic on the shrinking window between bug disclosure and exploitation, then we discuss the changing p

How The Conversation Predicted Our Surveillance Society 50 Years Ago
Jun 8, 202658m
Perhaps no film captures the paranoia and anxiety of the 1970s better than The Conversation, Francis Ford Copolla's masterpiece about reclusive surveillance expert Harry Caul, a man who it's safe to say has some demons.

Shai Hulud Returns, How Attackers are Using AI, and More Weird MSRC Behavior
Jun 5, 202636m
We regret to inform you that there are more npm supply chain attacks this week, and a new variant of the Shai Hulud worm is involved. We also talk about the new analysis from Anthropic on a year of data relating to how a

Microsoft Has Forgotten Its Vulnerability Disclosure History
May 29, 202645m
The recent Nightmare-Eclipse zero day drop and attendant drama has stirred up all kinds of trouble and unfortunately spurred Microsoft to publish a post scolding security researchers for not using the "proper channels" t

Lessons in Resilience, Perseverance, and Leadership With Matt Eversmann
May 25, 20261h 18m
After being caught in one of the more notorious battles in modern American history, Matt Eversmann's military career has become the stuff of legend. The Battle of Mogadishu, immortalized in the book and movie Black Hawk

Chain Chain Chain of Compromises
May 22, 202622m
In the spring, a young attacker's fancy turns to supply chain compromises, and this season's crop includes the GitHub breach and the Grafana intrusion, which are connected and trace back to the TanStack supply chain atta

What the Data Tells Us About Claude Mythos and Bug Exploitability | Jay Jacobs and Michael Roytman
May 19, 202643m
Finding a huge pile of bugs with Claude Mythos is great, but the logical next step is figuring out how many of those vulnerabilities are likely to be exploited in the near future. Jay Jacobs and Michael Roytman of Empiri

Solving Hard Security Problems With an Outsider's Perspective | Sravish Sridhar
May 15, 202653m
Unlike a lot of founders in the industry, Sravish Sridhar hasn't spent his career in the security world. He comes from a background in distributed computing and advanced math, and is a successful entrepreneur who's now b

AI Has a Security Measurement Problem | Gary McGraw
May 13, 202638m
Few people (if any) have spent more time thinking about and working on the hard problems in security and software than Gary McGraw, and he also happens to have a PhD in cognitive science and computer science and has been

Inside the $285M Drift Protocol Heist | Ari Redbord
May 11, 202634m
Ari Redbord, Global Head of Policy at TRM Labs, talks about the insane background behind the $285 million Drift Protocol crypto heist, how law enforcement agencies are investigating ransomware-linked cryptocurrency walle

The Canvas Attack, Ivanti and Palo Alto Exploits, and Dirty Frag
May 8, 202641m
If we needed any more evidence that the internet was a mistake, this week provided it. We kick things off with a discussion of the Canvas breach that has affected thousands of schools worldwide, then we dig into the disc

Fighting Cybercrime With Global Intelligence | Will Dixon
May 6, 202644m
Will Dixon has seen the evolution of cybercrime as both a GCHQ intelligence officer and a private sector executive and analyst, and has seen the way these groups operate up close. He joins Dennis to talk about the ongoin

The fast16 Mystery, Stuxnet, and the History of Cyber Espionage | Juan Andres Guerrero-Saade
May 4, 20261h 8m
JAGS joins Dennis Fisher to unpack the complex history of fast16, a highly targeted cyber espionage platform that goes back as far as 2005, many years before Stuxnet, and was deployed against targets in Iran. JAGS has be

cPanel Exploits, Copy Fail, and the History of Branded Bugs
May 1, 202642m
The security news was out of hand this week, so we had to pick our spots. We start with the nasty cPanel/WHM vulnerability that affects tens of millions of domains in shared hosting environments, then we discuss the C op

Defeating Online Scams and Disrupting the Cybercrime Chain | Ariana Mirian
Apr 28, 202650m
Ariana Mirian, cofounder of startup Beesafe, joins Dennis to talk about the mechanics of online romance and finance scams, how the scammers draw in victims over weeks or months, and why user awareness isn't the complete

The Vercel Intrusion and What is Happening at CISA
Apr 24, 202639m
This week we dig deep into the Vercel intrusion that emerged last weekend, how it happened, what the response was, and what the downstream effects may be for defenders. Then we talk about CISA's bizarre delayed response

Claude Mythos, Automated Bug Hunting, and AI Eating Everything
Apr 17, 202632m
It's been A WEEK. Security news never sleeps, and neither does AI, so Dennis and Lindsey dive into all of the storylines coming from the Claude Mythos and Project Glasswing announcements, how organizations will deal with

The Era of AI-Led Vulnerability Research With Tom Ptacek
Apr 13, 202655m
Dennis sits down with Tom Ptacek of Fly.io, a veteran security researcher, founder, and observer of the vulnerability landscape, to talk about the recent wave of AI-assisted vulnerability discovery and exploit developmen

Mapping the Cybercrime Ecosystem With Andrew Northern of Censys
Apr 7, 202633m
The internet is dark and full of terrors, but thanks to folks such as Andrew Northern, a principal security researcher at internet-mapping pioneer Censys, it doesn't have to be, Andrew joins Dennis to talk about the cybe

The Rapid Rise of AI Exploit Development and More Axios Compromise Effects
Apr 3, 202651m
It's been quite a week in security news, and Dennis and Lindsey dig into the continued effects of the axios supply chain attack, the incredibly fast adoption of AI tools for vulnerability research and what that means for

Axios NPM Supply Chain Attack
Mar 31, 202625m
Dennis and Lindsey dig into what we know do far about the supply chain attack on the axios NPM package, including how the attacker gained access to the maintainer's account, the window of exposure for the malicious packa

RSA Recap: Dancing Robots, AI Everywhere, and the Future of Security
Mar 27, 202651m
Fresh off the plane from RSA, Dennis fills Lindsey in on everything she missed (and didn't miss) at this year's conference (0:23), from the insanity of the expo floor (4:06) to the appearance of a line of synchronized ro

RSA 2026 Preview
Mar 20, 202643m
With the RSA Conference on the horizon, Dennis and Lindsey are here with a preview of the conference's more interesting sessions and keynotes, a discussion of the recent and ancient history of the conference, and a quick