Blog Archives

Yubicorn Bitcoin Challenge

Thursday , 13, May 2021 mike bitcoin, blockchain

I made three Bitcorns game challenges. These are challenges based on the fabulous Bitcoin token-based game called Bitcorns. This is the second of three challenges to get solved. Here is my description of the previous challenge. For those ambitious CTF types reading this, one still remains. With each one solved, the winner gets to transfer […]

MAT2: Metadata / EXIF Tool

Sunday , 3, November 2019 mike forensics, photos

When people ask me about metadata and they’re not asking about a phone app, I default to saying exiftool because it’s fabulous and it’s the tool that I like. But it’s rarely a good answer for most people who want simpler things. So I looked at MAT2, the successor to Metadata Anonymisation Toolkit (MAT). It […]

Photographs and Metadata

Friday , 26, July 2019 mike forensics, photos

Some image file formats like the ubiquitous JPEG standard, have file headers and metadata that can be scrutinized for signs of tampering in suspicious circumstances. There are increasing numbers of cases where malicious people take photographs of people and tamper with them, in order to create fake and compromising images for the purpose of blackmail […]

No newer/older posts