Notes on techniques

Introduction
- What?
- Why?
- How?
Problems and challenges

Root-me challenges

Introduction
- What?
- Why?
- How?
EXIF metadata
Dot and next line
Steganomobile
Twitter secret messages
TXT George and Alfred
WAV noise analysis
Poem from space
Yellow dots
EXIF thumbnail
WAV spectral analysis
APNG just a PNG
Crypt-art
PDF embedded
PNG LSB
PNG PIT
PNG PVD

Steganography

Hidden messages
Red Team
Improbability Blog
About
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PNG PVD

root-me challenge: Extract the hidden message from this image. SHA1: 06897894d602407321092489afeb84956ae2fd66.

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Unseen University, 2023, with a forest garden fostered by /ut7.