Bellingcat Challenge – August 2025(Hidden Hazards)

By Dr Tristan Jenkinson Introduction The August Bellingcat Challenges were all related to the identification of explosive ordinance. Key amongst the resources to consider were the article previously published on a beginners guide to the topic - https://www.bellingcat.com/resources/how-tos/2024/07/31/a-beginners-guide-to-identifying-explosive-ordnance-in-social-media-imagery/. The challenges were all put together by Andro Matthewson (author of the above article, currently at the … Continue reading Bellingcat Challenge – August 2025(Hidden Hazards)

Bellingcat Challenge – June 2025 (Cultural Confusion)

By Dr Tristan Jenkinson Introduction June’s challenges were set by the team at the Association for Research into Crimes against Art, considering issues with provenance, sections of stolen paintings, and the property of historical figures on sale on the dark web. Let’s dive in. Funny Money I went straight to ChatGPT to see if we … Continue reading Bellingcat Challenge – June 2025 (Cultural Confusion)

Bellingcat Challenge – Week 4 Writeup

By Dr Tristan Jenkinson Introduction This month Bellingcat are running a series of OSINT challenges, each week a new set of five challenges is posted for that week. The “Natural Wonders” series finished on Friday. If you haven’t already been playing along (and why not?!) you can join in at challenge.bellingcat.com (Spoiler warning- the rest … Continue reading Bellingcat Challenge – Week 4 Writeup

Bellingcat Challenge – Week 3 Writeup

By Dr Tristan Jenkinson Introduction This month Bellingcat are running a series of OSINT challenges, each week a new set of five challenges is posted for that week. The “Urban Exploration” series finished on Friday. If you haven’t already been playing along (and why not?!) you can join in at challenge.bellingcat.com, and you should probably … Continue reading Bellingcat Challenge – Week 3 Writeup

Bellingcat Challenge – Week 2 Writeup

By Dr Tristan Jenkinson Introduction This month Bellingcat are running a series of OSINT challenges, each week a new set of five challenges is posted for that week. Last week, the “Bellingcat Globetrotter” series focused on geolocation challenges, this week the “Maritime Mysteries” series is focused on sea, ships, and similar. Knowing that Rae Baker … Continue reading Bellingcat Challenge – Week 2 Writeup

Bellingcat Challenge – Week 1 Writeup

By Dr Tristan Jenkinson Introduction This week was the start of what promises to be a month of challenges from Bellingcat. Based on their posts across social media (e.g. https://bsky.app/profile/bellingcat.com/post/3lccsanaews2l), for five days a week each week in December, they are setting a new open source problem to be solved. You can solve them to … Continue reading Bellingcat Challenge – Week 1 Writeup

Shaking the Cobwebs CTF Part Four – Exploring the Blockchain and “The End”

By Dr Tristan Jenkinson The CSI Linux CTF - Shake the Cobwebs As anyone following my updates will have seen, I took part in the CSI Linux CTF over Christmas. The CTF required writing up a report of findings, and I thought that it might be helpful to share the content of my report. Part … Continue reading Shaking the Cobwebs CTF Part Four – Exploring the Blockchain and “The End”

Shaking the Cobwebs CTF Part Two – Morse Code and More

By Dr Tristan Jenkinson The CSI Linux CTF - Shake the Cobwebs As discussed in Part One, I took part in the CSI Linux CTF event over Christmas. The CTF required writing up a report of findings, and I thought that it might be helpful to share the content of my report. Part One covered … Continue reading Shaking the Cobwebs CTF Part Two – Morse Code and More

Shaking the Cobwebs CTF Part One – Audio Analysis

By Dr Tristan Jenkinson The CSI Linux CTF - Shake the Cobwebs As many of you may have seen, I took part in a Capture The Flag competition run by CSI Linux over the Christmas period (titled "Shake the cobwebs"), and was really pleased to finish first!! This was the first CTF that I have taken … Continue reading Shaking the Cobwebs CTF Part One – Audio Analysis