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 Three – Death Dates, Geolocation and an Article of Interest…

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 Three – Death Dates, Geolocation and an Article of Interest… →

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 →

The Importance of Data that Doesn’t Exist – Part Three (Missing Metadata – A Case Study)

By Dr Tristan Jenkinson Introduction In this series I am looking at the importance of data that is not present. In the previous two articles, I have looked at the use of timelines in identifying missing data, reasons that data from some sources may appear to be missing and considered potential steps to take or … Continue reading The Importance of Data that Doesn’t Exist – Part Three (Missing Metadata – A Case Study) →

Nothing’s DKIMpossible – Manually Verifying DKIM, a CTF Solution, and Implications

By: Dr Tristan Jenkinson Introduction I have recently been taking part in a capture the flag challenge focused on email forensics – see for example an article that I put out on LinkedIn here. The competition completed last week and I am very happy to have finished in third place. One of the challenges involved … Continue reading Nothing’s DKIMpossible – Manually Verifying DKIM, a CTF Solution, and Implications →