Joe Desimone @dez_
Security & AI @ Microsoft. Posts are my own Joined May 2008-
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Our new multi-model agentic security system brings together more than 100 specialized agents across frontier and custom models to find exploitable bugs, delivering top performance on the CyberGym benchmark. We used it ahead of Patch Tuesday to help find and fix 16 vulnerabilities. Today we’re announcing that customers can sign up to test it in private preview. microsoft.com/en-us/security…
@HackingLZ Agreed thanks for sharing and writing it up
@_xpn_ @cryps1s I didn't know TLOs was built by @SpecterOps, great work! Is it available for other orgs who are interested in research and evals?
OpenAI’s GPT-5.5 is the second model to complete one of our multi-step cyber-attack simulations end-to-end 🧵
Howdy folks! Taking a break from my twitter break to let yall know that we released a new @GreyNoiseIO product yesterday. It's called Project Swarm. We've been quietly not-so-quietly working on it for a few years. You can buy it now. It costs $1. There are lots of vulnerabilities on edge-facing apps. To catch in-the-wild exploitation of them, we @ GreyNoise run sensors on the internet. New AI models means more vulnerabilities being identified and exploited, and FASTER. Long term, software and hardware will probably get better, but in the meantime we're gonna have to deal with A LOT of vulnerabilities. At GreyNoise, the sensors we run are basically honeypots- we bait attackers to scan and exploit them which enables us to learn where the attackers are, which vulnerabilities they are exploiting, what it drops, and what it looks like on the wire. From ~2020-now it took us years to build up our fleet. Now anyone can use our new product to deploy their own sensors on their own networks, or an entire fleet of any size, in a day. You can rip back the data and do whatever you want with it. You can resell it, put it into your product, or just stare at it- whatever you want! On our side, we aggregate the data and pour it into a community dataset that everyone shares. As more people join, the data gets bigger and better. Couple neat features: - Sensor deployment is a single bash command on any modern linux distro that supports iptables and wireguard. - Sensors and vulnerable software (profiles) are abstracted into different logical concepts, which means the "what" and "where" are different things, and the sensor is not constrained by the compute required to run the vulnerable software. Also, no matter how hacked the profile (honeypot) gets, it can't touch your host sensor or the rest of your network. - Sensors can run fake honeypots, real software, or even real hardware (bridged with a raspberry pi) like old crappy routers and modems (or expensive firewalls and VPN gateways 👀) - You can create dynamic blocklists that block IPs sourced from your own sensors in real time, so if a remote IP address *looks at your network* the wrong way, you block them instantly. - All the PCAP data is available to you in a gorgeous and intuitive interface at near real time and fully enriched against all of our (thousands of) rules. We're working on the host metadata (malware, syscalls, host behaviors) as well, but this will come later. - If we don't tag a CVE that's interesting to you, you can write a Suricata rule to tag it yourself once and your data gets tagged with it in real time forever. - You can instantly download PCAPs of any exploits that hit your sensors. - If you don't want your data shared with the community dataset, you can talk to our team and we'll work out rights to make it private. Check it out! There's a lot of moving pieces to make this work and we expect bugs, but it's available right now. Join the fight! greynoise.io/project-swarm
Patch your Linux boxes! Copy.Fail is a trivially exploitable logic bug in Linux, reachable on all major distros released in the last 9 years. A small, portable python script gets root on all platforms. Found by the teams at @theori_io and @xint_official More details below xint.io/blog/copy-fail…
New adventure: wrapped week one at Microsoft Security! Working alongside @dwizzzleMSFT, who I plan to annoy with a backlog of questions. Excited to work on AI and security at planet scale 🤓
After 10 years at Elastic/Endgame, today is my last day. Incredibly proud of what this small but mighty team has built. Working alongside our community of users has been one of the most rewarding parts of the journey. On to a very exciting new adventure soon, stayed tuned!
@ItsReallyNick @dwizzzleMSFT Can't wait Nick!
@soolidsnakee @cyril_t_f @DanielStepanic @k33b0i Great read
Guess it worked
Engineers at Microsoft have been busy. Today they patched 5 LPE vulns I submitted to their bounty program. All found with AI (not Mythos 😛) Cloud Files Mini Filter Driver - msrc.microsoft.com/update-guide/e… Common Log File System Driver - msrc.microsoft.com/update-guide/e… Desktop Window Manager - msrc.microsoft.com/update-guide/e… Desktop Window Manager - msrc.microsoft.com/update-guide/e… Desktop Window Manager - msrc.microsoft.com/update-guide/e…
@N3mes1s @Gi7w0rm @wdormann @HaifeiLi @James_inthe_box @greglesnewich @vxunderground Another attempt at summarization here. Analysis + IoCs Adobe Reader ItW exploitation CVE-2026-34621 gist.github.com/joe-desimone/2…
After 10 years at Elastic/Endgame, today is my last day. Incredibly proud of what this small but mighty team has built. Working alongside our community of users has been one of the most rewarding parts of the journey. On to a very exciting new adventure soon, stayed tuned!
Justin Elze @HackingLZ
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chompie @chompie1337
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mRr3b00t @UK_Daniel_Card
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Adam Chester 🏴�... @_xpn_
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Mike Felch (Stay Read... @ustayready
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Kostas @Kostastsale
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mgeeky | Mariusz Bana... @mariuszbit
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Mick Douglas 🇺🇦... @bettersafetynet
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کوئینزل @M__Quinzel
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Ankur Shukla @AnkurSh62256598
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Jon @0xReaper0x
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Ron Gutani @RGutani
1 Followers 40 Following
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DAY JOHNSON⚡️ @daycyberwox
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noaa maman @MamanNoaa91338
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Janaína @Nainacazuza
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yo @yoa7df
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50 Followers 54 Following
Life is bullish📈 @CryptoCowboy98
281 Followers 5K Following “Bearish on social media, bullish on life”“The market is a device for transferring money from the impatient to the patient” #Trader #MacroEnthusiast #Investor
cr3ghost @cr3ghost
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kokilan @Kokilan_k
13 Followers 195 Following
Shisui @neo_shisui_
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Dennis Hermanns @dhe365
62 Followers 312 Following 100% Cloud | Security, Azure, M365. Always curious. Opinions are my own.
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Mxp @Mxp43i0
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Bafo Bruh @BruhBafo
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CDPC4 @CDPC44
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Shinoj Lalgi @racec0ndition
0 Followers 45 Following
Benshak @benson_sharks
2K Followers 3K Following Cybersecurity & Math nerd grinding daily 🇳🇬🇺🇸 | Threads on crypto exploits, orbital math & ethical hacking.
The Big heart @iadebowale584
1 Followers 103 Following My goal is to contribute to a safer digital environment by combining technical skills, analytical thinking, and proactive security strategies
psycho nerd @psychonerd3
32 Followers 304 Following
Ashwin S @0x4shWIN
2 Followers 121 Following Penetration tester | AI Security researcher | Red Teamer
blueberryinfosec @bbinfosec
620 Followers 5K Following Just Another guy whom plays 0 and 1 to make the people secure!
Ethan👽 @Ethan67399248
3 Followers 27 Following
m4c130d @m4c130d_
1 Followers 61 Following
Vaisov Bek @vaisovbek
813 Followers 7K Following Security Researcher aka Bug Bounty Hunter | CTF Player
Incognito Mode @Incognito_2609
4 Followers 131 Following
R∆V∆N∆N @R4vanan
48 Followers 675 Following i am also a gamer!! but a small difference, you love #Xbox to play! but i love #hackthebox to play ;-)
Justin Elze @HackingLZ
71K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
chompie @chompie1337
89K Followers 1K Following hacker, exploit developer/weird machine mechanic head of X-Force Offensive Research (XOR) @IBM
mRr3b00t @UK_Daniel_Card
123K Followers 8K Following Department of Cyber WAR. Member of the Counter Spider Collective. Wielder of AI to defend in Cyber Space. Ralph Vibe Specialist. VibeOps Operator!
Yarden Shafir @yarden_shafir
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Adam Chester 🏴�... @_xpn_
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Kostas @Kostastsale
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Will Dormann is on Ma... @wdormann
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Unit 42 @Unit42_Intel
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mgeeky | Mariusz Bana... @mariuszbit
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b33f | 🇺🇦✊ @FuzzySec
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The DFIR Report @TheDFIRReport
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Rad @rad9800
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x86matthew @x86matthew
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Katie Knowles @_sigil
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Chubby♨️ @kimmonismus
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Nathan McNulty @NathanMcNulty
18K Followers 1K Following Loves Jesus, loves others | Husband, father of 4, security solutions architect, love to learn and teach | Microsoft MVP | @TribeOfHackers | 🦋@nathanmcnulty.com
Xion @0x10n
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Feross @feross
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Chris Graham @cgrahamseven
564 Followers 290 Following Anti-malware malware dev. "I solemnly swear I am up to no good." Opinions expressed are solely my own and do not express the views or opinions of my employer.
Z.ai @Zai_org
118K Followers 261 Following The AI Lab behind GLM models, dedicated to inspiring the development of AGI to benefit humanity. https://t.co/7a5aSCUNcZ https://t.co/x14hb3klXm
FBI Cyber Division @FBICyberDiv
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Nıŋʝąƈąɬ 🐈 @RavivTamir
4K Followers 368 Following CyberNinjaCat Herder. VP of product strategy for the Microsoft Sentinel and Defender suite. Opinions r my own
Bert-Jan 🛡️ @BertJanCyber
4K Followers 622 Following CSIRT | https://t.co/Tu1l2ZFe0T | Microsoft Security MVP | Blue & Purple Team | SOC | SIEM | Threat Hunting | Detection Engineering | #KQL |
Rob Lefferts @Rob_Lefferts
1K Followers 193 Following Cybersecurity at Microsoft. Help people and keep them safe.
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515K Followers 858 Following chief ai officer @meta, founder @scale_ai. rational in the fullness of time
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vx-underground @vxunderground
439K Followers 361 Following The largest collection of malware source code, samples, and papers on the internet. Password: infected
shaharglazner @shaharglazner
1K Followers 779 Following Co-Founder & CTO @keepalerting. Likes to think out loud and a long distance runner.
International Cyber D... @IntCyberDigest
177K Followers 290 Following Your weekly go-to cybersecurity newsletter, curated and commented on by our senior analysts.
Adnan Khan @adnanthekhan
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Josh Kamdjou @jkamdjou
2K Followers 933 Following Founder/CEO @sublime_sec @emailrepio. "Do what you will, make the world a better place."
Charles Lamanna @clamanna
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Mustafa Suleyman @mustafasuleyman
651K Followers 496 Following CEO, @MicrosoftAI | Author: The Coming Wave | Past: Co-founder, @InflectionAI & @GoogleDeepMind
Newton Cheng @newton_cheng
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mav @MavLevin
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Alex Plaskett @alexjplaskett
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Aaron Grattafiori @dyn___
6K Followers 3K Following Offensive Security / AI Red Teaming @ NVIDIA. Ex-GenAI and OffSec Red Teaming Lead at Meta. Ex-Principal Consultant and Researcher @ NCC Group/iSEC Partners.You might like
