iiinova — where your digital self keeps evolving

Sofia Santos @gralhix.bsky.social · 14/06/2026

🕵️ 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

youtu.be

OSINT Olympics 2026 | Solution and full walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 12/06/2026

@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...

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Sofia Santos @gralhix.bsky.social · 11/06/2026

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...

youtube.com

Sneak peak of OSINT Olympics 2026 Challenge Walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 08/06/2026

😲 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

gralhix.com

OSINT Olympics 2026

Welcome to OSINT Olympics 2026 Challenge! Task briefing: The photo on the right contains clear evidence of having been taken on a cold evening. But that is just the tip of the iceberg. Hiding among…

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Sofia Santos @gralhix.bsky.social · 29/05/2026

I need more details than this 😅 All images are exactly the same lenght on my devices. I don't understand your point on the "tick". Also not sure what you're trying to tell me with the arrows. The titles are aligned to the centre, not top (if that was it).

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Sofia Santos @gralhix.bsky.social · 29/05/2026

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

gralhix.com

Sofia Santos | Gralhix

OSINT Challenges, Analysis & Tutorials

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Sofia Santos @gralhix.bsky.social · 31/12/2025

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...

gralhix.com

How to monitor oppressive regimes on Twitter using TweetDeck

This entry was updated in April 2023 to cover the new TweetDeck layout and settings (Click here to watch and listen to the video version of this blog entry) Twitter and TweetDeck as monitoring tool…

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Sofia Santos @gralhix.bsky.social · 15/12/2025

If you think you have the correct (full) answer please submit it on OSINT4Fun's page (linked above). Spoilers ruin the fun for everyone.

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Sofia Santos @gralhix.bsky.social · 14/12/2025

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...

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Sofia Santos @gralhix.bsky.social · 05/12/2025

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...

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Reposted by Sofia Santos

Bellingcat @bellingcat.com · 04/12/2025

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...

bellingcat.com

Community Operations & Project Manager - bellingcat

We are looking for a Community Operations & Project Manager to support our growing Volunteer Community and Bellingcat’s Investigative Toolkit project.

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Sofia Santos @gralhix.bsky.social · 30/11/2025

5/6 And finally, TryHackMe returns once again with Advent of Cyber 2025. There will be multiple ways to test your cybersecurity skills with these beginner friendly challenges. With prizes worth over $150,000 are you sure you want to miss it? 🖥️ Find them on: tryhackme.com/adventofcybe...

tryhackme.com

TryHackMe | Cyber Security Training

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Sofia Santos @gralhix.bsky.social · 30/11/2025

4/6 The HEX ADVENT 2025 is a Christmas themed CTF fully designed by women! Members of the Singapore’s female cybersecurity community & female co-workers from STAR Labs created these challenges for everyone! If you are eligible you may even win prizes. 🤶 Check it out on: hex-advent.starlabs.sg

hex-advent.starlabs.sg

Hex Advent 2025

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Sofia Santos @gralhix.bsky.social · 30/11/2025

3/6 I also heard from a good source that the @bellingcat.com 's open source December challenges won't be business as usual. Keep your eyes peeled and check out their Discord server or newsletter for tips and updates. I do love a good mystery. 🗓️ Check them out on: challenge.bellingcat.com

challenge.bellingcat.com

Bellingcat Open Source Challenge

Test your open source research skills.

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Sofia Santos @gralhix.bsky.social · 30/11/2025

2/6 First on my list is @osint4fun.eu's Advent of OSINT 2025. This project is not new to the game having already (successfully) created two previous editions of OSINT Advent calendars. This year they’re back for more! 🎄 Check them out on: www.osint4fun.eu/advent2025

osint4fun.eu

Ressources pédagogiques, challenges, exercices en OSINT | OSINT4Fun

Apprenez l'OSINT ( Open Source Intelligence) à travers nos challenges et exercices dont le calendrier de l'avent. Jouez seuls ou en équipe, challengez-vous !

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Sofia Santos @gralhix.bsky.social · 30/11/2025

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...

gralhix.com

Top 2025 OSINT and CTF Advent calendar challenges to keep you busy this December

It’s that time of the year again! An entire month dedicated to learning, exploring, and putting your OSINT skills to the test with daily challenges and Capture the Flag (CTF) events. Are you …

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Sofia Santos @gralhix.bsky.social · 01/11/2025

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!

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Reposted by Sofia Santos

Prabhat Kumar @prbhtkumr.bsky.social · 20/10/2025

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 😋

gralhix.com

List of OSINT Exercises – Challenge Yourself!

Looking to build your OSINT skills or put them to the test? Try out my list of free OSINT challenges! What are the OSINT Exercises? These OSINT exercises, also called challenges, give you the chanc…

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Sofia Santos @gralhix.bsky.social · 08/09/2025

🕵️ 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

youtu.be

OSINT Exercise 032 | Solution and full walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 04/09/2025

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 ❤️

gralhix.com

OSINT Exercise #032

Welcome to OSINT Exercise #032! Task briefing: Airports are global hubs where cultures, languages, and lives briefly intersect. Millions of people pass through them each day. On an undisclosed date…

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Sofia Santos @gralhix.bsky.social · 06/07/2025

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...

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Sofia Santos @gralhix.bsky.social · 23/06/2025

"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...

gralhix.com

How to access geoblocked websites without a VPN

Our ability to access online content depends on where we are based. Websites, platforms, organisations, and even entire countries may choose to restrict access to certain content based on geographi…

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Sofia Santos @gralhix.bsky.social · 03/06/2025

That you! I'm a big Linux lover 🐧 My DE does indeed look like gnome at first glance because of the GTK theme, but it's not. I just tend to mixmatch a lot of things 😅

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Sofia Santos @gralhix.bsky.social · 01/06/2025

🕵️ 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

youtu.be

Bellingcat OSINT Challenge | Back in Time: Toolkit Tracing | Full solution and walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 26/05/2025

🕵️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

youtu.be

Bellingcat OSINT Challenge | Back in Time: Future Plans | Full solution and walkthrough

YouTube video by Gralhix - Sofia Santos

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Reposted by Sofia Santos

mike @mightbemike.bsky.social · 23/05/2025

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.

gralhix.com

Sofia Santos | OSINT Analysis & Exercises

Visit the post for more.

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Sofia Santos @gralhix.bsky.social · 23/05/2025

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

youtu.be

Bellingcat OSINT Challenge | Back in Time: Creating Community | Full solution and walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 19/05/2025

🕵️ 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

youtu.be

Bellingcat OSINT Challenge | Back in Time: Training Time | Full solution and walkthrough

YouTube video by Gralhix - Sofia Santos

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Reposted by Sofia Santos

Michael Colborne @colborne.bsky.social · 19/05/2025

“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-...

linkedin.com

Vicarious Trauma in OSINT: Essential Reads | Sofia Santos posted on the topic | LinkedIn

In OSINT, especially within the field of human rights investigations, we often highlight and celebrate what open source research can uncover. But those achievements often come at a (high) cost. As we ...

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Sofia Santos @gralhix.bsky.social · 16/05/2025

Thank you. Giancarlo was also brilliant at solving this challenge yesterday.

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Sofia Santos @gralhix.bsky.social · 16/05/2025

🕵️ 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...

youtube.com

Bellingcat OSINT Challenge | Back in Time: Fresh Faced | Full solution and walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 15/05/2025

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...

tompatrickjarvis.medium.com

GPT geolocation — Why it’s a teacher & not a usurper

In this article, I’d like to explore a rather impressive application of AI from a practical, observational perspective — geolocation using…

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Reposted by Sofia Santos

Giancarlo Fiorella @giancarlofiorella.bsky.social · 14/05/2025

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!

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Reposted by Sofia Santos

Bellingcat @bellingcat.com · 12/05/2025

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

Reads Can one of our researchers solve our latest challenges within an hour? Bellingcat Open Source Challenge, Live with Giancarlo Fiorella, Director for Research and Training , 14th of May , 5pm CEST/11am EDT on Patreon.com/Bellingcat

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Reposted by Sofia Santos

Bellingcat @bellingcat.com · 05/05/2025

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

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Sofia Santos @gralhix.bsky.social · 05/05/2025

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

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Sofia Santos @gralhix.bsky.social · 01/05/2025

Probably an odd question, but it this write-up completed? I was reading it and felt like you started well but kinda stopped a bit abruptly without answering the two last task questions.

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Sofia Santos @gralhix.bsky.social · 01/05/2025

Thank you for the explanation on the write-up! It makes perfect sense. I let my bias get the best of me as I always used the escalator from the corner, and felt the view was similar to what I remembered 😅

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Sofia Santos @gralhix.bsky.social · 30/04/2025

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...

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Sofia Santos @gralhix.bsky.social · 21/04/2025

This one was great, but I need to point out that the red X marking the location of the photographer is not correct. On the original photo you can see one of the escalators to the right. That means that the person would have had to be on the second escalator, moving down at the time of the photo.

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Sofia Santos @gralhix.bsky.social · 21/04/2025

This one was brilliant! I loved how you found a photo of the same event from another angle 🌟

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Sofia Santos @gralhix.bsky.social · 16/04/2025

You've been busy! 😅 I will make sure to give them all a read over the weekend but I'm sure they are brilliant ❤️

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Sofia Santos @gralhix.bsky.social · 13/04/2025

It's great, thank you! Just a quick note that the google link under the last photo leads to a couple of okapis.

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Sofia Santos @gralhix.bsky.social · 07/04/2025

That was a really great walkthrough! It was very clear that you really enjoyed the challenge 😅 I'm glad it had that effect! I always feel like all OSINT investigations have the potential to be super fun.

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Sofia Santos @gralhix.bsky.social · 06/04/2025

🕵️ 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

youtu.be

2025 inCyber Forum OSINT Day Challenge | Solution and full walkthrough

YouTube video by Gralhix - Sofia Santos

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Sofia Santos @gralhix.bsky.social · 03/04/2025

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...

gralhix.com

OSINT Day – inCyber Forum 2025

Welcome to the inCyber Forum OSINT Challenge! Task briefing: The screenshot below contains the description of an event, accompanied by two photos. Despite the lack of details, it is still possible …

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