Dutch_OsintGuy
@dutchosintguy.bsky.social
Dutch guy with Open Source Intelligence & Analysis skills • OSINT • Certified Instructor @SANSInstitute • SVP of Engineering& Chief Innovator @ shadowdragon.io
𝗣𝗿𝗲𝗱𝗶𝗰𝘁𝗶𝗼𝗻 By 𝟮𝟬𝟯𝟬, every major Open Source Intelligence (OSINT), Cyber Threat Intelligence (CTI), law enforcement, and intelligence organization will have an Artificial Intelligence strategy. Almost none will have a 𝗝𝘂𝗱𝗴𝗺𝗲𝗻𝘁 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆. 🧵
Critical Thinking in OSINT due to AI
This isn’t a rant against AI. I use it daily, ChatGPT, Copilot, Claude, Gemini. They’re in my workflow like everyone else’s. But the tradecraft is slipping. Analysts are skipping the hard parts. They’...
dutchosintguy.com
I'm excited to announce I'll be speaking at @defcon.bsky.social #ReconVillage this August! My talk, "OSINT Is Still a Thinking Game," explores how AI dependence is eroding our tradecraft - and how to fight back. See you in Vegas. #DEFCON34 #ReconVillage #OSINT #CyberSecurity
Taking the new biscuit pro for a (war)drive. Wifi / BLE sniffing is a highly overlooked technique within #osint research and investigations. Nerds gonna nerd 😎
The @SANSInstitute #OSINT summit #Amsterdam is about to get started and sold out. Day 1 workshops, day 2 talks. I’ll be having a ton of fun chairing this together with Matt Edmondson. Looking forward to see old friends and make a bunch of new friends.
A horrific #Belfast stabbing shows why responsible OSINT matters. Starting with one BBC article + basic Google searches, I used ShadowDragon Horizon to map public online signals around the suspect Not hacking. Not guessing. Just OSINT. www.bbc.co.uk/news/article... #OSINT #ShadowDragon
I generated a realistic Amsterdam street with AI. It does not exist. Then I asked a new ChatGPT chat to geolocate it. It confidently named a real street. Then it found no strong AI tells. For OSINT, seeing is no longer believing. Verification is. Read: www.dutchosintguy.com/post/the-ams...
The Amsterdam Street That Never Existed
AI can generate a convincing Amsterdam street that never existed, then fail to recognize its own fiction when asked to geolocate it. This experiment shows why visual plausibility is no longer proof. F...
dutchosintguy.com
OSINT is changing fast: AI, disinfo infrastructure, closed platforms, leaked data, propaganda, and analytical error. I’ll be hosting the SANS OSINT Amsterdam Summit 2026 with Matt Edmonson. 📍Amsterdam 📅 15–16 June www.sans.org/cyber-securi...
SANS OSINT Amsterdam Summit 2026
Unlock the full potential of your career with cybersecurity training at SANS OSINT Amsterdam Summit 2026. Guided by world-renowned instructors at the forefront of the field, this event provides exclus...
sans.org
🚨 New blog: The open web is being poisoned by AI slop, synthetic personas, fake context and amplified lies. Once polluted information becomes searchable, repeated and summarised by AI, it can look like evidence. Evidence poisoning is the #OSINT is real ! www.dutchosintguy.com/post/evidenc...
Evidence Poisoning: The OSINT Crisis Nobody Is Ready For
Evidence poisoning is the contamination of the open web with synthetic, manipulated or amplified material that later appears useful as investigative evidence. In an age of AI slop, fake personas, recy...
dutchosintguy.com
AI made it easier to build #OSINT tools. It did not make them safer to trust. A tool does not need to crash to mislead you. It only needs to quietly shape what you collect, what you miss, and what you stop questioning. Read the blog here: www.dutchosintguy.com/post/vibe-co...
Vibe Coding Is Becoming an OSINT Risk
AI has made it easy for OSINT practitioners to build and install investigative tools. It has not made it safe to trust them. This blog examines the real risk behind vibe coding, viral GitHub apps, and...
dutchosintguy.com
ICYMI ⬇️
Dutch_OsintGuy@dutchosintguy.bsky.social · 5mo agoMy latest blog looks at how people can be spotted online, groomed, moved into closed spaces, and turned into disposable proxies for real-world violence. From Jewish targets to dissidents, this is about the runway before the fire starts. www.dutchosintguy.com/post/from-op...
I will be presenting the closing keynote at the SANS Amsterdam OSINT Summit, 15–16 June 2026: OSINT at a Crossroads: Thinking, Judgment, and the Human Edge This is going to be an awesome event. Full agenda with speakers will be announced soon. www.sans.org/cyber-securi...
REMINDER ! CFP for the SANS OSINT summit Amsterdam 15-16 june is still open for a few days. I know I have enough folks seeing this that can give awesome talks. Don't be shy and apply 😃 . If you are hesitant or want help with your CFP feel free to send me a message.
Dutch_OsintGuy@dutchosintguy.bsky.social · 5mo agoGood news for the OSINT community. The SANS OSINT Europe Summit 2026 is coming to Amsterdam on 15-16 June 🇳🇱. And the Call for Papers is now open. 📅 Submit before 23 March 2026 app.smartsheet.com/b/form/019c7... Let’s push the craft forward. #OSINT
My latest blog looks at how people can be spotted online, groomed, moved into closed spaces, and turned into disposable proxies for real-world violence. From Jewish targets to dissidents, this is about the runway before the fire starts. www.dutchosintguy.com/post/from-op...
From Open Web to Real-World Target: The OSINT Trail Behind Proxy Violence
This is not just random extremism. It is a pipeline. From open platforms to closed chats, vulnerable people can be spotted, shaped, tested, and pushed toward real-world violence as disposable proxies....
dutchosintguy.com
Shoutout to #networkchuck - his recent video on AI almost making him quit YouTube pushed me to write this. New blog on #OSINT, cognitive overload, synthetic media, AI dependence, and the slow erosion of human judgment. Read my blog here: www.dutchosintguy.com/post/ai-may-...
AI and OSINT: The Cognitive Impact on Analysts and Intelligence Work
AI may not replace analysts first. It may break them first. This blog explores how cognitive overload, synthetic media, AI dependence, and algorithmic pressure may erode the human judgment behind OSIN...
dutchosintguy.com
Good news for the OSINT community. The SANS OSINT Europe Summit 2026 is coming to Amsterdam on 15-16 June 🇳🇱. And the Call for Papers is now open. 📅 Submit before 23 March 2026 app.smartsheet.com/b/form/019c7... Let’s push the craft forward. #OSINT
Look forward to be hosting the SANS Institute #OSINT summit in #Amsterdam 🇳🇱with Matt Edmondson Steven Harris June 15-16 More info and call for talks will be announced soon! www.sans.org/cyber-securi...
‘Twitter randos’ are tracking US military flights. Why that creates a security risk san.com/cc/twitter-r...
‘Twitter randos’ are tracking US military flights. Why that creates a security risk
U.S. Air Force officials warn that public flight tracking by OSINT analysts poses a direct threat to military operational security worldwide.
san.com
ICYMI 👇
Dutch_OsintGuy@dutchosintguy.bsky.social · 6mo agoNew Blog: AI isn’t just supporting OSINT — it’s distorting it. Hallucinations, poisoned data, synthetic narratives… and leadership often can’t see it happening. My new blog digs into this shift with examples, risks, and what must change. 📘 Read here: www.dutchosintguy.com/post/critica...
New Blog: AI isn’t just supporting OSINT — it’s distorting it. Hallucinations, poisoned data, synthetic narratives… and leadership often can’t see it happening. My new blog digs into this shift with examples, risks, and what must change. 📘 Read here: www.dutchosintguy.com/post/critica...
Critical Thinking Collapse 2.0: AI’s Impact on OSINT
AI isn’t just speeding up OSINT - it’s reshaping what investigators and leaders believe is true. As hallucinations, data poisoning, and AI-generated narratives flood the information space, critical th...
dutchosintguy.com
New Blog: More OSINT tools. More dashboards. Less actual reasoning. AI didn’t break OSINT, it revealed a problem that was already there. OSINT is still a thinking game. Read it here: www.dutchosintguy.com/post/osint-i...
ICYMI 👇
Dutch_OsintGuy@dutchosintguy.bsky.social · 7mo agoNew Blog: OSINT isn’t getting harder because investigators lack tools. It’s getting harder because the internet is becoming adversarial: disappearing data, closed platforms, AI deception. The next phase of #OSINT will be about judgment, not dashboards. www.dutchosintguy.com/post/the-nex...
New Blog: OSINT isn’t getting harder because investigators lack tools. It’s getting harder because the internet is becoming adversarial: disappearing data, closed platforms, AI deception. The next phase of #OSINT will be about judgment, not dashboards. www.dutchosintguy.com/post/the-nex...
ICYMI 👇
Dutch_OsintGuy@dutchosintguy.bsky.social · 7mo ago🚨New blog: A city is not a word. It’s a language system. When people say “020,” “Mokum,” or “Freedom City,” they’re still talking about Amsterdam just not in a way your #OSINT investigation understands. Imagine how many you’re missing. Read the blog here: www.dutchosintguy.com/post/how-osi...
🚨New blog: A city is not a word. It’s a language system. When people say “020,” “Mokum,” or “Freedom City,” they’re still talking about Amsterdam just not in a way your #OSINT investigation understands. Imagine how many you’re missing. Read the blog here: www.dutchosintguy.com/post/how-osi...
OSINT - Cities with hundreds of names | How OSINT investigators miss hidden clues
You think you know Amsterdam? You don’t. Even if you’re born and raised there. For OSINT investigators, analysts, and journalists, searching only for “Amsterdam” means missing half the signal. The cit...
dutchosintguy.com
🧵 1/14 2025 wasn’t a writing exercise for me. It was a warning. Across every blog I wrote this year, one pattern kept repeating: OSINT doesn’t fail because we lack data, tools, or AI. It fails when we stop thinking.
