Matt Johansen @mattjay
Helping Secure the Internet | Long Island elder emo surviving in ATX | Expect: infosec current events, DFIR, appsec & cloudsec - and me! vulnu.com Join 30k+ subscribers: Joined June 2008-
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Did the Secret Service just take down a massive cyber threat? youtu.be/hVLMdo63EUI (I just don’t have the patience to game the Twitter link sharing algorithm)
I’m having date hallucinations. Three times this week I’ve texted my team something like: “I know I have something November 17th. What is it?!” And it’s nothing.
This is a terrifying tweet to read from John f’n Hultquist.
This is a terrifying tweet to read from John f’n Hultquist.
This is so well said. I’ve seen exactly this so many times. In SIEM but also in waf, vuln scanning, email. It’s hard out here for startups to shed the reputation of 2010s versions of what they’re building in 2025.
This is so well said. I’ve seen exactly this so many times. In SIEM but also in waf, vuln scanning, email. It’s hard out here for startups to shed the reputation of 2010s versions of what they’re building in 2025.
former helpdesk unite!
I wrote up a quick blogpost why this SIM farm story is bogus and why you journalists should feel embarrassed for not questioning such obvious propaganda. cybersect.substack.com/p/that-secret-…
I wrote up a quick blogpost why this SIM farm story is bogus and why you journalists should feel embarrassed for not questioning such obvious propaganda. cybersect.substack.com/p/that-secret-…
This story is nonsense. It's just normal criminal enterprise for sending SMS spam and anonymous messages. Somebody used this service to send SMS threats to some politicians, so the Secret Service traced it back here. They are describing it as some special political threat ("35…
This story is nonsense. It's just normal criminal enterprise for sending SMS spam and anonymous messages. Somebody used this service to send SMS threats to some politicians, so the Secret Service traced it back here. They are describing it as some special political threat ("35…
I'm making something really neat for parents on the topic of AI Safety. In the mean time, I'm posting on instagram/tiktok. Getting the first few followers is often hard, so it would be sick if you could go follow them 😊 The handle is @ aisafetyforparents on both! links👇
THE expert on npm security - @feross, founder of @SocketSecurity We talked all things worm, and zoomed out to figure out why npm is more susceptible to this vs other languages. And covered how to protect yourself! youtu.be/ME5ZjlqXOoY
No details. No who. Also how could 100k SIM cards do espionage? I’d be more worried about ad fraud. Not saying it’s BS cause that’s a wild setup but no clue what the attack would be.
No details. No who. Also how could 100k SIM cards do espionage? I’d be more worried about ad fraud. Not saying it’s BS cause that’s a wild setup but no clue what the attack would be.
We released a formerly private resource from our Attacking AI course today! Enjoy. The Arcanum AI Security Resource Hub executiveoffense.beehiiv.com/p/executive-of…
Chat is this for real? Gartner didn’t even put Claude Code or Codex on the quadrant at all? GitHub the leader?
Does everyone know what this word means

Dave Kennedy @HackingDave
224K Followers 6K Following Founder @Binary_Defense @TrustedSec Co-Owner https://t.co/HQC75WhdJh. @WeHackHealth Pod. God + Family/Hacker/CSO/USMC/Intel/Fitness. Make the world a better place.
gabsmashh @gabsmashh
108K Followers 3K Following security strategist | 2L JD Candidate | NYU alum | UMGC adjunct professor | USMC & USCG auxiliarist
corgi @corg_e
53K Followers 3K Following ssh'd into the espresso machine | (mostly) harmless pentester | president @bsidesnash | @defcon615 | chaotic neutral
meg west @cybersecmeg
151K Followers 937 Following Tweets about #dogs & travel & fitness & cybersecurity, oh my! Opinions are my own. 📧: [email protected]
mRr3b00t @UK_Daniel_Card
114K Followers 8K Following Department of Cyber WAR CEO of everyone's email servers!
💻 Sherrod DeGrippo... @sherrod_im
36K Followers 7K Following Weird security voyeur. Vibe merchant. CISO of your 🩷 Official USPS fan account. 🎉 Host of THE Microsoft Threat Intelligence Podcast. I like crime actors.
not here; find me els... @ElleArmageddon
28K Followers 3K Following find me on bluesky or linkedin; i’m never coming back
Accidental CISO @AccidentalCISO
58K Followers 2K Following I accidentally became the CISO. I didn't want this job, but the job chose me. I'm scared, and I want to go home.
Lina @d0rkph0enix
38K Followers 10K Following Infosec dork, boxer, poker player, dog owner/operator, spiller of things. Cars, vidya games, and cooking are my jam. #ChiefsKingdom and Royals fanatic. #SecKC
Justin Elze @HackingLZ
65K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
medusfour Ⓥ @medus4_cdc
27K Followers 7K Following I exist, but at what cost? privacy nerd, maker of cursed art, hacking the world for chaotic good. all nodes are equal.
Nicole Beckwith @NicoleBeckwith
42K Followers 7K Following Director, Security Operations @kroger 🍓 Intel, Hunting, IR, Detection Engineering, Insider Risk, Fraud & Forensics 💻 Fmr LE & DFIR for OH & Secret Service TF.
Ray [REDACTED] @RayRedacted
64K Followers 8K Following Hacker, Researcher, Podcast Producer (Tribe of Hackers, Darknet Diaries). Proud dad of the fastest climber in the world. Ever. “Ut scandis, alios subleva”
rand0h @dakacki
23K Followers 1K Following Dogfather / Goon / @WSIIAOfficial / Existing in bluer skies @ https://t.co/ROEAl8ngeA / https://t.co/m3LR3M8mBX
TracketPacer @TracketPacer
58K Followers 396 Following 🚀 rockit network engineer | 👩🏼💻🛜 weird use cases & silly tech
InfoSecSherpa 🏔️ @InfoSecSherpa
51K Followers 4K Following #Librarian 📚 to #InfoSec 🤖 #Philly area hoagie mouth 🥨#Ginfosec 🍸 #Everton ⚽️ Your guide up a mountain of information! 🏔️ #GoBirds
sysengineer @_sysengineer
27K Followers 959 Following I do not give Facebook permission to print anything off my computer
Daniel Cuthbert @dcuthbert
32K Followers 2K Following Documentary photographer, old creaky hacker. Co-author of @OWASP ASVS standard. Blackhat/Brucon Review Board & Co_chair UK Gov Cyber Security Advisory Board
JS0N Haddix @Jhaddix
167K Followers 7K Following CEO, CISO, Trainer, Hacker, and Speaker. Cybersecurity + Hacking + AI + Sec Leadership @arcanuminfosec
Amato @xamatox
7 Followers 314 Following I am: marketer/professor/writer/more. I like: sports/statistics/tech/more.
TheKiller @ChandMrsarthak1
85 Followers 487 Following
Lionel Arucy @ArucyLionel
2K Followers 3K Following Techpreneur and all round Geek in all things eccentric, love music, movies and gaming
The Risk Navigator @Risk_Navigator
116 Followers 496 Following Gen-X | Risk | Power BI | Power Automate | NUFC | 🇬🇧 | Rapscallion | Alt + F4 | Ubulungu | Have you tried turning it off and on again? | Pronouns: NOR/MAL |
Mammy @MammyBaker
6 Followers 502 Following
scott @pentontech
216 Followers 970 Following Veteran 🇺🇸. Web analyst, UI Designer, IT Specialist, playing with AI
Nate | Cybersecurity @NateSentryloft
18 Followers 93 Following Founder of Sentryloft / Cybersecurity nerd / sysadmin / World traveler / Bitcoin lifer
veil @0xeijji
1 Followers 9 Following
Sir ilyn payne🇸�... @emsiwhippin
95 Followers 2K Following Les femmes sont les Reine de ce monde. vive l'amour, vive la liberté, aimons-nous vivant Christopher Nolan is a G.O.A.T 🐐🔥
juan @juan91211852
5 Followers 63 Following
Vasquez grant @Tzvi_Day
290 Followers 908 Following ## Graduate UC Denver Finance & Risk Management commodities student / Army Vet / Cybersecurity Bro/ Data Dude / Stacker / Investor / Trader / Dad ##
Bjørn Tore Hagen @bjorn_tore
122 Followers 808 Following System developer for a small web application service provider.
RunMyLife @502badlifeway
5 Followers 160 Following
rondo rick @rondor1ck
0 Followers 12 Following
Joe @quppajoe
36 Followers 303 Following
lodaket @lodaket
1 Followers 154 Following
chris @okiechristopher
57 Followers 100 Following
EX8it @MyFriendCaptain
8 Followers 112 Following
Adam Small @cadamsmall
433 Followers 3K Following CEO of CRM, Marketing and Automation platform and AI enthusiast
Joseph Paul @Joseph_Paul_V
1K Followers 3K Following Founder - Long Shore Wealth & Frontier Market Data
Rajeshwar Singh @rajeshwarkohli
4 Followers 344 Following
Smokey @RockyTopHorror
0 Followers 64 Following
Wyn || Astrologer @WinterAstrology
544 Followers 408 Following They/Them 🔞 SW, World astrologer, Sex Astrologer Using both traditional western and Indian astro techniques. https://t.co/HkUGN9Jyvf for booking!
D3VUR🇺🇦🇺🇸 @D3VUR
1K Followers 2K Following 🇺🇸🇺🇦 Raising public awareness to global mental health epidemic through embroidered metamodernism and stale memes
🏴☠️ Gardene... @GardenerSantana
3K Followers 5K Following Hacker, Eterno estudiante... Docente Ciberseguridad - ANTI FASCISTA - Hacking, Redes, Servers, Linux! #keephacking #keepLearning & #ShareYourKnowledge
Garrett @GarrettMichiels
563 Followers 1K Following
Petrosan @PetrosanGeurel
203 Followers 3K Following World of fire Customisable Personal /Business cards 💳🔻
Rodo @Rodo1341056
4 Followers 57 Following
Phillip Soloweszyk @psolowes
145 Followers 1K Following
Jason Waterman 🇨�... @jaywaterman
7K Followers 3K Following CTO @Fanoramas, Prev: @mozilla (PM Add-ons, Firefox SDKs), CTO & Co-founder of @momentumdash, Passionate about Technology & Productivity. Proud dad of 3.
Scottiedisaster @Scottiedisaster
48 Followers 228 Following Official page! I'm just a small time streamer who just loves playing games. My other project: http://ozg
Jaou @victorjaou
112 Followers 253 Following
Andrew @austinsnotweird
95 Followers 355 Following Typical face blind autist. I write code. My posts are ephemeral.
IH8MONDAYS @IH8MONDAYS42069
950 Followers 2K Following
Caturai @froggerit
1 Followers 103 Following
Lowell Manners @lowellmanners
22 Followers 158 Following Trying to apply AI to cybersecurity faster than attackers do
A @changhunik
14 Followers 270 Following
Michael Graf Rasch�... @its_for_sale
92K Followers 62K Following Realtor Condos in Brickell, Coconut Grove, Downtown Miami, Miami Beach Coral Gables 📱305-741-1819 3x #NYTimes 2x #WSJ Linkedin https://t.co/jwcAAZ7hpX
Sarah Blanchard @SarahBlanc65648
1 Followers 80 Following
Adam Goss @gossy_84
2K Followers 251 Following I help businesses and individuals enhance their cyber threat intelligence processes, develop their skills, and make CTI actionable.
Dave Kennedy @HackingDave
224K Followers 6K Following Founder @Binary_Defense @TrustedSec Co-Owner https://t.co/HQC75WhdJh. @WeHackHealth Pod. God + Family/Hacker/CSO/USMC/Intel/Fitness. Make the world a better place.
Jake Williams @MalwareJake
143K Followers 2K Following Breaker of software | VP R&D @hunterstrategy | CTI/DFIR | @ians_security faculty | Bookings: jake at malwarejake dot com | GSE #150 | He/him
gabsmashh @gabsmashh
108K Followers 3K Following security strategist | 2L JD Candidate | NYU alum | UMGC adjunct professor | USMC & USCG auxiliarist
corgi @corg_e
53K Followers 3K Following ssh'd into the espresso machine | (mostly) harmless pentester | president @bsidesnash | @defcon615 | chaotic neutral
meg west @cybersecmeg
151K Followers 937 Following Tweets about #dogs & travel & fitness & cybersecurity, oh my! Opinions are my own. 📧: [email protected]
mRr3b00t @UK_Daniel_Card
114K Followers 8K Following Department of Cyber WAR CEO of everyone's email servers!
💻 Sherrod DeGrippo... @sherrod_im
36K Followers 7K Following Weird security voyeur. Vibe merchant. CISO of your 🩷 Official USPS fan account. 🎉 Host of THE Microsoft Threat Intelligence Podcast. I like crime actors.
not here; find me els... @ElleArmageddon
28K Followers 3K Following find me on bluesky or linkedin; i’m never coming back
Accidental CISO @AccidentalCISO
58K Followers 2K Following I accidentally became the CISO. I didn't want this job, but the job chose me. I'm scared, and I want to go home.
Lina @d0rkph0enix
38K Followers 10K Following Infosec dork, boxer, poker player, dog owner/operator, spiller of things. Cars, vidya games, and cooking are my jam. #ChiefsKingdom and Royals fanatic. #SecKC
Justin Elze @HackingLZ
65K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
medusfour Ⓥ @medus4_cdc
27K Followers 7K Following I exist, but at what cost? privacy nerd, maker of cursed art, hacking the world for chaotic good. all nodes are equal.
Mick Douglas 🇺🇦... @bettersafetynet
31K Followers 570 Following Consultant for InfoSec Innovations | @SANSInstitute Principal Instructor | @IANS_Security Faculty | I like information security. How about you?
Nicole Beckwith @NicoleBeckwith
42K Followers 7K Following Director, Security Operations @kroger 🍓 Intel, Hunting, IR, Detection Engineering, Insider Risk, Fraud & Forensics 💻 Fmr LE & DFIR for OH & Secret Service TF.
Ray [REDACTED] @RayRedacted
64K Followers 8K Following Hacker, Researcher, Podcast Producer (Tribe of Hackers, Darknet Diaries). Proud dad of the fastest climber in the world. Ever. “Ut scandis, alios subleva”
rand0h @dakacki
23K Followers 1K Following Dogfather / Goon / @WSIIAOfficial / Existing in bluer skies @ https://t.co/ROEAl8ngeA / https://t.co/m3LR3M8mBX
TracketPacer @TracketPacer
58K Followers 396 Following 🚀 rockit network engineer | 👩🏼💻🛜 weird use cases & silly tech
InfoSecSherpa 🏔️ @InfoSecSherpa
51K Followers 4K Following #Librarian 📚 to #InfoSec 🤖 #Philly area hoagie mouth 🥨#Ginfosec 🍸 #Everton ⚽️ Your guide up a mountain of information! 🏔️ #GoBirds
sysengineer @_sysengineer
27K Followers 959 Following I do not give Facebook permission to print anything off my computer
Eric Parker @atEricParker
4K Followers 3K Following 170k Tech / Cybersecurity YouTuber. PHD in vibe coding Security Researcher, Reverse Engineer
Adrienne Rockenhaus @adezero
7K Followers 1K Following Web developer. Neuroinsurgent. Lulz Enjoyer. Shitposting since AIM away messages. Frequent deleter of tweets. 🧢 @Rockrockenhaus is my king. #oxfordstrong
Cthulhu ( ;,;) @Cthulhu_Answers
16K Followers 6K Following ( ;,;) 🌮 🐙 Amateur Astrobiologist, Gravitic Propulsion Engineer, Eldritch Historian, Antifa Commander, Defcon TentacleOps. #CoT
Rob Hallam @robj3d3
27K Followers 958 Following Shipping like a machine 🤖 while I travel the world 🌍️ 🔥 https://t.co/myyLdxVzcg - Grow faster on X ($7.5K/m) 🚀 https://t.co/5fSvUeZJ8z ($38K) 🤝 https://t.co/l4mcaViGk7 🕵 https://t.co/Cwvsl9cPsS
Ivan Krstić @radian
12K Followers 869 Following Head of Security Engineering+Architecture (SEAR) at Apple. I don’t speak for my employer.
visi stark @invisig0th
5K Followers 677 Following Founder @vtxproject Father of the #APT1 Report @mandiant / @fireeye Inventor of synapse, vivisect, UNCs, imphash, ... DEFCON CTF Champion, Founder of Kenshoto
Tal Be'ery @TalBeerySec
10K Followers 2K Following Security Research Manager. Co-Founder, CTO @ZenGo. Advisor @ZeroNetworks. x-VP Research Aorato, acq by @Microsoft. 9 times @BlackHatEvents speaker.
Confidence Staveley @sisinerdtweets
41K Followers 1K Following Multi-Award Winning #Cybersecurity Leader & Int’l Speaker. Founder @cybersafehq | Author - API Security for White Hat Hackers.
kiwi @ DEFCON @Kiwi_FruitBird
1K Followers 917 Following cybersec | probably playing Baldur’s Gate 3
Bryan Johnson @bryan_johnson
651K Followers 761 Following Conquering death will be humanity’s greatest achievement.
sudox @kmcnam1
12K Followers 3K Following CCIEx2 #50931 and a bunch of random paper. Opinions are my own and not the company I work. I guess I'm Green Arrow's daughter or something...
Evan Tobac @evantobac
1K Followers 825 Following Security Researcher, Maker | Co-Founder, Head of Research & Tech at @SocialProofSec | @BSidesSF Review Committee | He/him | https://t.co/usxjnTc0oZ
d4rkm4tter (Mike Spic... @d4rkm4tter
13K Followers 4K Following #WiFiCactus | #WiFiKraken | Utah | @dc801 | free range wigler (ask @lintile) | AI Cyber the Cybers | Apex Storage x21/x16 designer
Maxie Reynolds @__maxreynolds
2K Followers 86 Following Data center expert. CEO of @subseacloud. Author of The Art of the Attack (cyber security book) and contributing author to Greener Data V2&3.
Marc 👾 @hackenschere
189 Followers 634 Following bringing safe AI agents into hospitals & Hacking/securing medical devices |||| AI Specialist // Engineer // Hacker opinions==mine
Maybe @maybe
13K Followers 385 Following Answer tough financial questions with Maybe, an AI-native financial decision making tool that connects the dots on your data, without a CFO.
Ervin Kalemi @ervinkalemi
4K Followers 792 Following Empowering your online presence. @publer • @linkie_bio • @kibo_ai
RussianPanda 🐼 �... @RussianPanda9xx
16K Followers 529 Following Меня ищет МВД 🚔 | Threat Hunter @HuntressLabs | TRACLabs https://t.co/QNvr2yUuJM | Malware Addict | DFIR
Dave W Plummer @davepl1968
88K Followers 75 Following Hi! I'm Dave Plummer. You might remember me from such Windows components as Task Manager, Windows Pinball, Calc, ZIPFolders, Product Activation, etc. Cheers!
Alex Kehr @alexkehr
29K Followers 5K Following ceo, @superlocalmaps (acq by foursquare) • i like maps, design, and making apps (@machineofideas)
Lulu Cheng Meservey @lulumeservey
115K Followers 3K Following Founder of ROSTRA. Ex-Activision and Substack. “Meservey isn’t your typical flack.” -The Information. Writing https://t.co/4xKo7wQTQo
Matthew Berman @MatthewBerman
75K Followers 859 Following Building Forward Future. YouTuber, Angel Investor, Developer, AI Enthusiast. https://t.co/9rk7dmIboR
Pietro Schirano @skirano
91K Followers 925 Following CEO at @magicpathai 🎨✨ Previously, @AnthropicAI, @brexHQ. @Uber, @Facebook. Creator of Claude Engineer, DesignerGPT, Sequential thinking MCP and more
Daniel Lockyer @DanielLockyer
20K Followers 99 Following • performance + scaling consultant 🚀 • server guy for @levelsio • 2:48 marathoner
seeknay @seeknay
143 Followers 1K Following 💻 Identity & Collaboration Engineer 🎮 Gamer ☕️ Coffee Drinker 🍕Self-Proclaimed Pizza Connoisseur 🎧 EDM Lover 🖖 StarTrek Fan
Nikita Bier @nikitabier
604K Followers 2K Following head of product @x, advisor @solana, venture partner @lightspeedvp, ex-founder @gasappteam (acq by discord), ex-founder @thetbhapp (acq by facebook)
Paul Graham @paulg
2.1M Followers 778 Following
Austen Allred @Austen
424K Followers 1K Following Founder https://t.co/m6TigM4CJT: Free AI training for the smartest engineers in the world. Will tweet as I wish and suffer the consequences.
Jack Fields @OrdinaryInds
22K Followers 92 Following Former Apple engineer running Ordinary Industries // Head writer at @kernelext // Polymath // I use Vim btw
Some of you @kaorrosi
12K Followers 1K Following Offensive Security & Vulnerabilities Research | Study Blog 🎧 | Cyberspace Philosophy 📚 | Data Privacy Advocate |{✨️seggsy snek✨️} ~•D.T.A.M.•~
Jake Ward @jakezward
29K Followers 113 Following Doing https://t.co/LCOKe7GY63 since 2019. Making $20M/yr for clients. Also building: https://t.co/IbVSm7Cw9R https://t.co/9XlAFl74lE https://t.co/C4ZhqdaRcZ
Microsoft Threat Inte... @MsftSecIntel
187K Followers 1K Following We are Microsoft's global network of security experts. Follow for security research and threat intelligence.
Alex Finn @AlexFinnX
317K Followers 9K Following Founder/CEO of Creator Buddy, the only AI trained on all of your X posts. Built a $300k ARR app by myself. Check it out: https://t.co/4BfYJUDFEh
Jamie Levy🦉 @gleeda
10K Followers 6K Following @Volatility Core Dev | Art of Memory Forensics co-author | Director of Adversary Tactics @HuntressLabs | #DFIR enthusiast/trainer | [email protected]
KitKat @K4tTr33
2K Followers 1K Following Senior Cybersecurity Consultant | Former Protector of Magic 🏰✨| #DFIR 💙 https://t.co/zrwbXwSlBz./Ph.D. #InfoSec #CURIOSITY & #COFFEE~! 🇹🇭 ☕☕💕 @DeadPixelSec💀
Dmytro Krasun @DmytroKrasun
26K Followers 2K Following I know how to code without AI, but I won’t. Built and grew https://t.co/9KmQTXjs9S to 500+ paying customers. One of the best screenshot APIs for developers.
Andras Bacsai @heyandras
19K Followers 467 Following Trying to make servers & self-hosting mainstream by building an OSS Heroku/Netlify/Vercel alternative: @coolifyio | https://t.co/ewWKa4zKcX
Jennifer Wood @CurrentJen
1K Followers 1K Following Space geek, roaming gnome, comms @LutaSecurity. Ex-USG: @OMBPress @NASA @EPA US_Senate. Formerly @Kaspersky @BlackBerry @Microsoft/@WEcomms_@UF Grad_My opinions
Chris Raroque @raroque
6K Followers 271 Following I build productivity apps and make YouTube videos 🤠
claire vo 🖤 @clairevo
35K Followers 3K Following 👩👦👦 mama 💻 3x CPTO • building @chatprd • 🎧 host @ How I AI 🧠 pm + eng + ai + startups 😍 @elawless 📱chiefproductofficer on tiktok