Chapter 10 of 10 · Steganography 100%

🛡️ Stegomalware keeps showing up in threat reports, yet most of it dies the moment a CDN re-encodes the image. Could you score a folder of pictures and catch the one payload that survived?

Re-encoding an upload quietly destroys most hidden data, and statistics catch much of what survives. You'll batch-score images with StegExpose (chi-square, RS, sample pairs), confirm a hit with zsteg, and chain the whole course on one file. 🔬

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Steganography

🛡️ Stegomalware keeps showing up in threat reports, yet most of it dies the moment a CDN re-encodes the image. Could you score a folder of pictures and catch the one payload that survived?

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Ready to track your progress?

Course Progress

Course Chapters

Steganography foundations

Metadata and EXIF secrets

Appended data and carving

LSB image steganography

Steghide and passphrase cracking

Audio steganography

Text and whitespace hiding

QR codes and visual encodings

Document and polyglot stego

Steganalysis and detection