🕵️ The solution to OSINT Olympics 2026 is now live on Youtube! 🌡️Level: Hard 🔥🔥🔥 🖥️ Check out the video walkthrough where I explain how to complete all tasks. ✅ Did you solve it? #osintchallenge youtu.be/uANOWz2y7Uk

@cen4infores.bsky.social is hiring! Are you the unicorn we are looking for? 🦄 🇦🇫 Afghan Specialist - Digital Security Trainer 🇧🇫 Burkina Faso - Senior Researcher Also looking for 🇦🇫 Afghan investigators for the talent pool. ⚠️ All closing soon so don't waste time! apply.workable.com/centre-for-i...

I have received numerous messages from people with their answer to my latest challenge. Not a single one so far was correct. The problem is as old as time: confirmation bias. I hope my upcoming video walkthrough makes sense, but in the meanwhile, here's a sneak preview. youtube.com/shorts/wxgGK...

😲 An (OSINT) Bonus Challenge appears! 🕵️ "OSINT Olympics 2026" (not actually related to the Olympics, don't get confused) 🌡️ Level: Hard ⏰ Solution with full walkthrough will be uploaded to YouTube at the end of the week. 🙊 Have fun and no spoilers! #osintchallenge gralhix.com/osint-olympics-2026

My website has a new look! This upgrade has been a long time coming as I often felt my "old" website was a bit crappy 😬 I'm not a web designer so it's still not perfect, but I'm much happier with how it looks now. Check it out! ❤️ gralhix.com

Do you want to investigate human rights violations? Protests in Iran are spreading and authorities escalating efforts to suppress them. In 2022, I wrote a guide using Iran as a case study. All methods and keywords still very relevant (and you dont even need X/tweetdeck). gralhix.com/2022/12/17/h...

For my 2nd challenge for @osint4fun.eu's Advent of OSINT 2025 you will need to identify the airline, make and model of the aircraft seen in the photo below. Can you do it? 🤔 Enter your answer on OSINT4Fun's page to confirm whether you were right 🎅 Best of luck! www.osint4fun.eu/advent2025/2...

The answer to this OSINT challenge will reveal my favourite Christmas film of all time 😍 This @osint4fun.eu's Advent calendar challenge has a twist. You start with the coordinates but these point to.. nothing..? 🤔 Enjoy and please, NO SPOILERS in the comments! www.osint4fun.eu/advent2025/2...

Know how to make online communities feel like home (and stay organised doing it)? Bellingcat needs a Community Operations and Project Manager to support our growing global Volunteer Community and to help run Bellingcat’s Investigative Toolkit project. Apply here: www.bellingcat.com/bellingcat-j...

1/6 It’s that time of the year again. As we wrap up 2025, I have compiled a list of the best OSINT and CTF Advent calendar challenges that are sure to put your skills to the test this season! 🌟 Are you ready for a busy December? 👇 gralhix.com/2025/11/30/t...

The #30DayMapChallenge is an incredible project that runs every November. Participants create & share maps on 30 themes. A well crafted visualisation can transform a "boring" section into something that really sticks with the reader, so I'll be checking our this year's entries for inspiration!

ever feel this chronic itch for some OSINT challenge? well, i do. and i really didn't want to practice profiling people i know irl. here's a list of OSINT challenges brought to you by the awesome @gralhix.bsky.social. gralhix.com/list-of-osin... have fun sharpening those skills 😋

🕵️ The solution to OSINT Exercise 032 is now live on Youtube! ⚠️ Warning: There's some cursing involved! ✅ Did you solve it? 🖥️ Check out the video walkthrough where I explain how to complete all tasks. 🌡️Level: Beginners: Medium ~ Hard; Experts: Easy ~ Medium. #osintchallenge youtu.be/WGw7xLKOqn8

OSINT Exercise 032 is now live! gralhix.com/osint-exerci... A video was recorded by an unknown traveller at an undisclosed airport. Despite the absolutely chaos of the footage (be warned!), it is possible to determine the exact date, time, an in which terminal the person was. I hope you enjoy ❤️

The @cen4infores.bsky.social is looking for a UK-based OSINT Investigator with Arabic and/or Farsi language skills. The closing date for this role is 9 July 2025, so there are only a few days left! If you wish to apply please follow the instructions on the website: apply.workable.com/centre-for-i...

"How to access geoblocked websites without a VPN" Content restrictions are a hassle, especially in open source investigations. VPNs are great, but not always an option. This blog post explores a simple workaround, with a couple of real world examples to try yourself 🔽 gralhix.com/2025/06/23/h...

🕵️ The final walkthrough in my Back in Time series for @bellingcat.com is out! The "Toolkit Tracing" OSINT challenge focuses on the skills needed to track down documents that have been deleted, moved, or updated. The video covers several techniques useful to these situations. youtu.be/c40_x-_nvS4

🕵️Just uploaded a walkthrough for the 4th @bellingcat.com's Back in Time OSINT challenge: "Future Plans". I designed this one to show how staying organised helps tackle complex investigations with multiple pivot points. Hope it’s helpful! youtu.be/P6cN7QRaEA4

🔍 Another chance to use #OSINTforGood: Europol has added new images to their #TraceAnObject page. Your skills could help identify key items in child sexual abuse cases. Every clue counts! www.europol.europa.eu/stopchildabuse

Looking for a distraction? Try some of the great challenges @gralhix.bsky.social has on gralhix.com Loads of good #OSINT content there, go now.

New job: Tech Investigations Editor @lighthousereports.com. If you're into investigating Big Tech, AI accountability, and researching at the impact of tech on our lives, this could be the job for you. wrkbl.ink/6hIlpoY

The "Creating Community" @bellingcat.com OSINT challenge walkthrough is now live! I got to explore and talk about time zones, how systems interpret them, and why they matter in investigations. Such a fascinating topic 🤓 I hope the video is fun and educational ❤️ youtu.be/AlrwKfcne20

🕵️ The solution to @bellingcat.com's OSINT Challenge "Training Time" is now live on Youtube! Whether you have solved the challenge or not, I invite you to give it a watch, indoor geolocations are always fun! youtu.be/jZ-rxhT5QYM

“So many of us spend their days immersed in some of the darkest moments of humanity. We are regularly reminded that monsters do exist, and they walk among us. The toll of that realisation is not always visible, but it's nevertheless always felt” @gralhix.bsky.social www.linkedin.com/posts/sofia-...

🕵️ The solution to @bellingcat.com's OSINT Challenge "Fresh Faced" is now on Youtube! Whether you've already completed it or not, I invite you to give it a watch; there is always something new to learn. One of the possible methods relied solely on critical thinking 🤔 www.youtube.com/watch?v=RKsy...

Could AI outperform, or even replace, an experienced OSINT analyst in geolocation tasks? Tom Jarvis once again shows why he's regarded as one of the best in the field with this brilliant piece of analysis. Check it out: tompatrickjarvis.medium.com/gpt-geolocat...

This is starting in about 20 minutes! Tune into our Patreon page to watch me struggle and get sweaty with @gralhix.bsky.social's open source research challenges!

Join our Director for Research and Training @giancarlofiorella.bsky.social as he takes on the latest Bellingcat challenges live on Patreon. Can he solve all five within the hour? Open to all Patreon members we will be streaming at 5pm CEST/11am EDT, Wednesday May 14th on Patreon.com/Bellingcat

We’re back — the new open source challenges launch today! This month they were created by the one and only @gralhix.bsky.social, and take a deep dive into Bellingcat’s archives. Are you ready? Find the new challenges on Challenge.bellingcat.com

I have created five OSINT challenges! 🎉 The set, titled "Back in Time", focuses on @bellingcat.com's many contributions to the OSINT community over the past decade, and can be found on their new challenge platform. Go and check them out! 🔽 challenge.bellingcat.com

The @cen4infores.bsky.social is hiring 3 OSINT investigators for a 6 week contract. This is a remote position. If you have the skills, can speak and write English and Malay, Indonesia, or Thai, and are interested in the opportunity, here is the link to apply: apply.workable.com/centre-for-i...

🕵️ The solution to the 2025 inCyber Forum OSINT Day Challenge is on Youtube! ✅ Did you solve it, or do you need help? 🖥️ Check out the video to verify your answers, or learn how to complete all tasks. Have a great week! #osintchallenge youtu.be/Fw4LECgCZZI

I don't often create on-demand challenges but when I do I make sure they can be enjoyed by everyone! Here is the challenge I designed for the 2025 inCyber Forum OSINT Day. I now invite everyone to give it a go. I was told they were not that easy, so best of luck 😅. gralhix.com/list-of-osin...

Are you a keen researcher and passionate about environment or wildlife investigations? Bellingcat is looking for wildlife and environment related investigations that use open source methods and tools. www.bellingcat.com/uncategorize...

I wrote a blog entry focused on how the past decades of OSINT reshaped investigative journalism and the pursuit of truth, justice, and accountability by playing a vital role in modern human rights investigations. Hope you enjoy the read ♥️ gralhix.com/2025/03/10/h...

We're hiring! Bellingcat is looking for an Open Source Investigator and Trainer to join our Human Rights and Conflict Monitoring team. Read about the role and apply here: www.bellingcat.com/bellingcat-i...

Two years, 31 OSINT exercises, and over 300 walkthroughs later, I’m humbled by the knowledge, creativity, of the OSINT community ❤️ To celebrate I made it easier to share your walkthroughs, highlighted the best ones, and shared my top favourite. Read it all below: gralhix.com/2025/01/27/t...

🕵️ The solution to OSINT Exercise 031 is now live on Youtube! 🌡️Level: Beginners: Easy; Experts: Easy. 🖥️ Check out the walkthrough on YouTube where I explain how to complete all tasks. ✅ Did you get it right? #osintchallenge youtu.be/vUoRDCkPq28

🕵️ OSINT Exercise #031 is out! 🌡️Level: Beginners: Easy; Experts: Easy. ⏰Solution with full walkthrough will be uploaded to YouTube in the weekend. 🙊Have fun and no spoilers! #osintchallenge gralhix.com/osint-exerci...

Who captured these historic 1960s San Francisco snapshots? 📷 Abandoned for years in a storage unit, these unseen photos are finally seeing the light of day, but the photographer's identity remains a mystery. Can you help solve it? 🕵️‍♀️ Join the search: blog.archive.org/2025/01/10/e...

Bellingcat is an absolute powerhouse in OSINT resources. If you haven't checked their website, toolkit, and discord channel you're definitely missing out!

"A day in the life of an investigator: Inside the world of open source at CIR" In this article me and Erin talked about how got our jobs, our typical work day, tools we use, what is the best part of the job, and tips on how to become an OSINT analyst at CIR. www.info-res.org/cir/articles...

How are you getting on with OSINT Advent challenges? I'm struggling a bit.. mostly for time but some got me stumped! (I'll get there.. maybe) Today my final @osint4fun.bsky.social challenge was released. It was an easy but fun one. Did you get it right? 😉 www.osint4fun.eu/advent2024/e...

🧵 Want to level up your #OSINT skills? Let me introduce you to some incredible free resources from Gralhix (Sofia Santos), Senior Analyst at Centre for Information Resilience First, this amazing compilation of OSINT & cybersecurity advent calendars for December 2024 #InfoSec #CyberSecurity

The season of exploring, sharing, and learning is upon us! I compiled a small list with the best OSINT & cybersecurity advent calendars with prizes, team competitions, CTFs, live streams, and compelling storylines! Check them out on my new blog post 👇 gralhix.com/2024/11/30/t...

"What OSINT books do you recommend?" I used to list this on my FAQ page, but I didn’t get asked often enough to keep it there. Clearly a mistake because I was just asked again! 🙃 So here’s my answer:

I'm really grateful to people who've created starter packs of accounts to follow. Here are three OSINT-related packs with great folks. 1. Bellingcat staff/contribs: bsky.app/starter-pack... 2. Global OSINTers: bsky.app/starter-pack... 3. Flight trackers/OSINT: bsky.app/starter-pack...

With so many new followers in the past 24h I feel like I must be on some list. Anyone care to point me towards it? 😅

Got a questions? I may have some answers. I updated the text on the "Frequently Asked Questions", and on the "List of OSINT Exercises" pages on my website. Added new info, and removed some. Improved? Who knows 🤷‍♀️ I think it looks better at least. gralhix.com

🕵️ The solution to OSINT Exercise 030 is now live on Youtube! 🌡️Level: Beginners: Hard; Experts: Hard. 🖥️ Check out the walkthrough where I explain how to complete the task. ✅ Did you solve it? #osintchallenge youtu.be/iroKPCseMC8