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Dennis

@dennisf@infosec.exchange
mastodon 4.8.0-alpha.3+glitch
  • Open on infosec.exchange

Wrote a couple books, started a couple things, met Shaq once.

603 Followers
178 Following
50 Posts
Joined November 04, 2022
Twitter:
https://twitter.com/DennisF
Work:
https://duo.com/decipher
Open post
Dennis @dennisf@infosec.exchange
· 2w ago
‘We Have Enough AI’: Realism in a Time of Relentless Hype - Decipher
Decipher

‘We Have Enough AI’: Realism in a Time of Relentless Hype - Decipher

Let’s ask a simple question that seems to be getting lost in all of the credulous fervor around AI: How’s this working out for everyone?

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Open post
Dennis @dennisf@infosec.exchange
· 3w ago

The AI vulnpocalypse isn't a real thing

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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
Why can't the adults name tech products anymore?
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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

It's been one year since we launched the revamped version of @Deciphersec@infosec.exchange, which is hard to believe. Lots more cool stuff is on the horizon!
https://decipher.sc/2026/09/02/one-year-of-decipher-relaunched/

One Year of Decipher (Relaunched) - Decipher
Decipher

One Year of Decipher (Relaunched) - Decipher

It’s been one year since we relaunched Decipher in September 2025. Here are the videos, podcasts, and articles that best reflect our mission statement: Security without fear.

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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
A little @blackhatevents@bird.makeup memory lane from an elderly person.
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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

ExploitGym: Nightmare CrossFit studio or AI benchmark? Why not both!

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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
Specifically for @noplasticshower@infosec.exchange
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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago

Talked to the great @cigitalgem@sigmoid.social on the @Deciphersec@infosec.exchange podcast this week about what's really happening with AI security, model escapes, etc.
https://youtu.be/M9uUuWnUb-A?si=OlyF_5EgcYpbSYt0

The truth about AI model security and what's coming next | Gary McGraw

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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
Replying to
@401matthall@mastodon.xyz I'm afraid you're probably right. On all counts.
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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
Replying to
@Wednesday@defcon.social You know I love sharks! But I know shark week is bad for them.
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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
Replying to
@cigitalgem@sigmoid.social @noplasticshower@infosec.exchange I always forget which alter ego is which!
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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

Aloha! New @Deciphersec@infosec.exchange podcast with @todb@infosec.exchange of @runZeroInc@infosec.exchange is available for your listening/viewing pleasure.
https://youtu.be/9WNJugOOqug?si=1uVXypF-w-9fIjBY

We Need to Talk About KEV With Tod Beardsley

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Open post
Dennis @dennisf@infosec.exchange
· 3mo ago
Replying to
@silas@infosec.exchange Nice! Been waiting for something like this since SOURCE ended 🪦
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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

We have a secret weapon at @Deciphersec@infosec.exchange and it's @LindseyODWelch@infosec.exchange. Great video with @cigitalgem@sigmoid.social and @k8em0@infosec.exchange on the Claude Mythos non-release.

https://youtu.be/uCyvQ_ubXo8?si=DincJX_Kef-jllpq

Fix the Dang Software: Claude Mythos and Vulnerability Research

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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

I'm relatively certain some of y'all can read, so here's an excerpt of my @Deciphersec@infosec.exchange podcast with @todb@infosec.exchange in word form.
https://decipher.sc/2026/03/03/qa-tod-beardsley-on-how-to-use-cisas-kev-catalog/

Q&A: Tod Beardsley on How to Use CISA’s KEV Catalog - Decipher
Decipher

Q&A: Tod Beardsley on How to Use CISA’s KEV Catalog - Decipher

Without context, the KEV catalog is just a very large collection of data. Tod Beardsley is the former CISA KEV section chief, and he recently released a paper called KEVology that provides key context and evaluates the value of certain enrichment signals.

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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

R2D2 IS A HACKER (sorry for yelling) and me and @rmogull@defcon.social and @wade@infosec.exchange talked about it!

https://youtu.be/FHZC6i-co8Y?si=6bSGIeXNL70JyefN

Deciphering STAR WARS

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

Got the chance to talk to my pal @jags@infosec.exchange, famous podcast host, about the @SentinelLabs@infosec.exchange fast16 research and the expanding history of cyber espionage tools.

https://youtu.be/Nemom0_vCYU?si=p0A8o-1z54OXcLoJ

The fast16 Mystery, Stuxnet, and the History of Cyber Espionage | Juan Andres Guerrero-Saade

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Open post
Dennis @dennisf@infosec.exchange
· 10mo ago

Talked with the great @rmogull@defcon.social about the Cloudflare outage and platform fragility.
https://youtu.be/2118EJ4Gb5s?si=mJAKMr4hDUwl3Tw9

Rich Mogull on the Cloudflare Outage, Resilience, and Single Points of Failure

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

New @Deciphersec@infosec.exchange podcast, in which we talk about the Vercel intrusion and what in the world is happening with CISA these days.

https://open.spotify.com/episode/19N3VtIS1OU3PhnTnFKnzG?si=PO2CnB1_T8eUms3mLnesPw

Spotify

The Vercel Intrusion and What is Happening at CISA

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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

Hey guess what! Me and @wendynather@infosec.exchange talked about The Martian and Mark Watney, space hacker, on a new @Deciphersec@infosec.exchange podcast!

https://youtu.be/jDiaoKjWQbY?si=lla8xtTW1wiCDotC

Mark Watney is a Space Hacker in The Martian

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Open post
Dennis @dennisf@infosec.exchange
· 8mo ago

Did I talk about CSI: Cyber and @0xcharlie@bird.makeup and @nudehaberdasher@bird.makeup on this @Deciphersec@infosec.exchange podcast? You bet your ass I did.

https://open.spotify.com/episode/2Zi84e5YP7buD3Zfz3mJyt?si=6da2feed1e054be5

Spotify

Six Zero Days From Microsoft, One From Apple, and a CSI: Cyber Throwback

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

Did you favorite vuln make the Mt. Rushmore of Branded Bugs? Only one way to find out!
https://decipher.sc/2026/04/30/a-copy-fail-faq/

A Copy Fail FAQ - Decipher
Decipher

A Copy Fail FAQ - Decipher

The latest branded bug is a slick, portable LPE in many Linux kernels going back to 2017.

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Open post
Dennis @dennisf@infosec.exchange
· 8mo ago

🚨 New @Deciphersec@infosec.exchange podcast is up!
🪲 New Fortinet SSO auth bypass exploitation
🪲 Attacks on old WinRAR flaw
🖥️ Google disrupts IPIDEA proxy network

https://open.spotify.com/episode/5k9xpXyD7YSlJRkYqoCQde?si=K-CkeXMgRvGLHnpVpxNg1w

Spotify

Fortinet and WinRAR Exploitation, Google's IPIDEA Disruption, and Our Favorite Cybersecurity Creators

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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

New @Deciphersec@infosec.exchange podcast with the great @tqbf@infosec.exchange on Claude Mythos and all things AI-assisted bug hunting.
https://open.spotify.com/episode/4EVod019ZbZMRJqtraka6i?si=d5fb611cef1e4a6e

Spotify

The Era of AI-Led Vulnerability Research With Tom Ptacek

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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

Insert Fleetwood Mac supply chain joke here.

https://youtu.be/20QYNwwVQ_s?si=OzHTeRdu9bjQekF4

The Fallout From the Nasty Axios NPM Supply Chain Attack

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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago
Command Injection Bug in OpenAI Codex Exposed GitHub OAuth Tokens - Decipher
Decipher

Command Injection Bug in OpenAI Codex Exposed GitHub OAuth Tokens - Decipher

The bug is a command injection issue and lies in the way that Codex processed GitHub branch names during the execution of tasks.

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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

I got to talk to the great @catc0n@infosec.exchange for the @Deciphersec@infosec.exchange podcast. It was great because she's great.

https://youtu.be/VLvtO5QxHXE?si=qaY8buqfcKlW8JnV

The Wild, Wild World of Exploits With Caitlin Condon

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Open post
Dennis @dennisf@infosec.exchange
· 10mo ago

Very fun new @Deciphersec@infosec.exchange podcast with my old friend Jeff Gothelf, talking about lean UX, collaboration for security teams, and lots of other stuff.
https://youtu.be/6kBvEmB4eCQ?si=xfGkwSm0n-tO6Zgl

Jeff Gothelf on Designing for Users, Enterprise Agility, and the AI Conundrum

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Open post
Dennis @dennisf@infosec.exchange
· 10mo ago

Bulletproof hosting services are a BIG problem.
https://decipher.sc/2025/11/19/doj-sanctions-bulletproof-hosting-provider-used-by-ransomware-groups/

DoJ Sanctions Bulletproof Hosting Provider Used By Ransomware Groups - Decipher
Decipher

DoJ Sanctions Bulletproof Hosting Provider Used By Ransomware Groups - Decipher

The provider, Media Land LLC, has been used by ransomware actors like Lockbit, BlackSuit, and Play, and its infrastructure has been leveraged across several distributed denial-of-service (DDoS) attacks against US companies and critical infrastructure.

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Open post
Dennis @dennisf@infosec.exchange
· 1w ago

Every day can be zero day if you try hard enough.
https://youtu.be/4M2ooW4IJfI?si=NO8ZMvcHNNqRtndu

The Citrix NetScaler Zero Day Saga | Ben Harris

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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

Fun new @Deciphersec@infosec.exchange podcast with Christine Gadsby of BlackBerry, who I've known for *many* years.
https://youtu.be/Vk-RJBr1jS8?si=wUQwWrW5bP5eDv3H

Securing Communications in an AI-Assisted World | Christine Gadsby

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

What a fun Sunday!

https://decipher.sc/2026/04/19/vercel-says-internal-systems-hit-in-breach/

decipher.sc
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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

Bonus @Deciphersec@infosec.exchange podcast episode this week, with Will Dixon of @intel471inc@bird.makeup on the cybercrime ecosystem and how it continues to shift and reshape.
https://decipher.sc/podcasts/fighting-cybercrime-with-global-intelligence-will-dixon/

Decipher

Fighting Cybercrime With Global Intelligence | Will Dixon

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 ongoing threat from ransomware gangs, how organizations are managing their responses, and…

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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

If you think surveillance is getting more pervasive, you're not imagining it. We talked to @eff@mastodon.social Exec Director Nicole Ozer about this and much more on the @Deciphersec@infosec.exchange podcast this week.

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Open post
Dennis @dennisf@infosec.exchange
· 2mo ago
So you want to learn OT security. Listen to the great @hacks4pancakes tell you what it's like.
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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

Not ideal

https://decipher.sc/2026/03/31/supply-chain-attack-hits-axios-npm-packages/

Supply Chain Attack Hits Axios  NPM Packages - Decipher
Decipher

Supply Chain Attack Hits Axios NPM Packages - Decipher

Axios is a dependency in nearly 80% of all cloud and code environments and sees approximately 100 million downloads per week.

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Open post
Dennis @dennisf@infosec.exchange
· 2w ago

“We’ve got leverage now, our labor is still required and this is our time to strike. You and your creativity are the real frontier. I hope you never pace yourself. Don’t slow down.” @k8em0@infosec.exchange

https://decipher.sc/2026/09/21/we-have-enough-ai-realism-in-a-time-of-relentless-hype/

‘We Have Enough AI’: Realism in a Time of Relentless Hype - Decipher
Decipher

‘We Have Enough AI’: Realism in a Time of Relentless Hype - Decipher

Let’s ask a simple question that seems to be getting lost in all of the credulous fervor around AI: How’s this working out for everyone?

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Open post
Dennis @dennisf@infosec.exchange
· 3mo ago
The wise and powerful @k8em0@infosec.exchange has seen many and more security civilizations rise and fall.
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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

Where my philosophy majors at?

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Open post
Dennis @dennisf@infosec.exchange
· 1mo ago

Old malware never dies, it just goes to live in OT networks.

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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

Sleeping too well at night? Having pleasant dreams? I have the cure for that! Thanks to our pals at Material security.

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Open post
Dennis @dennisf@infosec.exchange
· 6d ago

Do you like webshells? No? Too bad! We talked to @watchtowrcyber@bird.makeup CEO Ben Harris about the weirdo Citrix zero day saga on the @Deciphersec@infosec.exchange podcast.
https://youtu.be/4M2ooW4IJfI?si=a3tPrlhfsDXK0c3b

The Citrix NetScaler Zero Day Saga | Ben Harris

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

Hey guess what!

https://decipher.sc/2026/05/06/845/

Palo Alto CVE-2026-0300 Actively Exploited - Decipher
Decipher

Palo Alto CVE-2026-0300 Actively Exploited - Decipher

PAN released an advisory about the vulnerability on Tuesday and said it will release a patch in an upcoming version of PAN-OS.

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Open post
Dennis @dennisf@infosec.exchange
· 7mo ago

Movies are cool.
https://youtu.be/FHZC6i-co8Y?si=qs2wQ3hdzEMU-PGl

Deciphering STAR WARS

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Open post
Dennis @dennisf@infosec.exchange
· 8mo ago

Mondays are crap, but here's a new @Deciphersec@infosec.exchange podcast with Ryan Dewhurst from @watchtowrcyber@bird.makeup to brighten your day!
https://youtu.be/5WznmQpJnj4?si=bhnQ_Io_HM4wXSPX

How to Stay Ahead of Attackers With watchTowr's Ryan Dewhurst

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Open post
Dennis @dennisf@infosec.exchange
· 3mo ago
Update your things people.
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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

I can't get over how this operation was handled.

https://decipher.sc/2026/04/05/the-285m-drift-protocol-heist-was-6-months-in-the-making/

The $285M Drift Protocol Heist Was ‘6 Months in the Making’ - Decipher
Decipher

The $285M Drift Protocol Heist Was ‘6 Months in the Making’ - Decipher

During the largest DeFi hack of 2026, it only took attackers 12 minutes to drain millions in user assets - but the build up to the attack took six months of meticulously planned social engineering.

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Open post
Dennis @dennisf@infosec.exchange
· 5mo ago

I talked to one of my absolute favorite people, @amirian@infosec.exchange, for a new @Deciphersec@infosec.exchange podcast about the scourge of trust-based scams and how to stop them. Full episode is up now!

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Open post
Dennis @dennisf@infosec.exchange
· 6mo ago

What's happening with that whole Project Glasswing/Claude Mythos thing? Hard to say! But we gave it a try.
https://decipher.sc/2026/04/13/myths-and-mythos-an-ai-vulnerability-research-faq/

Myths and Mythos: An AI Vulnerability Research FAQ - Decipher
Decipher

Myths and Mythos: An AI Vulnerability Research FAQ - Decipher

It’s still very early days for all of this, and relatively little is known about Claude Mythos’s real capabilities, so we wanted to dig into what actually is known and what it all means.

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Open post
Dennis @dennisf@infosec.exchange
· 1w ago

In case you were actually living your life this weekend and missed it, things popped off with Citrix.

https://decipher.sc/2026/09/27/researchers-warn-of-citrix-netscaler-exploitation/

Researchers Warn of Citrix NetScaler Exploitation - Decipher
Decipher

Researchers Warn of Citrix NetScaler Exploitation - Decipher

On Saturday, researchers from watchTowr Labs said they had credible information that attackers were exploiting an unknown RCE vulnerability in Citrix NetScaler boxes.

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