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hpr4394 :: Digital Steganography Intro

I take a very high level look at digital stegnography. What is it? How is it used in practice?

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Hosted by mightbemike on Thursday, 2025-06-05 is flagged as Clean and is released under a CC-BY-SA license.
steganography. 2.

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Duration: 00:32:36
Download the transcription and subtitles.

general.

Apologies for not introducing myself in the audio! I struggled a bit to take on this topic at a high enough level to keep it to about a half hour, because every subtopic is nuanced and the details are always technical.


Not sure how well it worked out but my intention was to focus mainly on the 2 most common examples - hiding messages in text and in images.


Topics I mentioned:

  • encryption vs steganography
  • who uses steganography and for what purpose?
  • hiding text in text
  • hiding data in images using LSB encoding
  • hiding data in other places
  • steganalysis


If you want to leave feedback, consider saying whether you think it would be more useful to talk about:

  • using the most popular tools and software
  • detailed look at specific steganographic techniques
  • case studies

in the unlikely case that I do a followup episode (I doubt there's a strong interest in this topic)


Comments

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Comment #1 posted on 2025-06-05 14:42:12 by Henrik Hemrin

Fascinating topic

I enjoyed this episode! It is an interesting topic. I would like to hear about case studies.

Somewhat related. At least I heard that some persons writing some technical documents, hide their "kilroy" in eg a drawing, like maybe tiny black text on a black line. Somewhat similar is hidden code, like I recall a Tektronix oscilloscope that if you entered a specific order of commands, a figure would play on the screen - I didn't find it out but I remember a colleague did. And some software has hidden games in the code.

Comment #2 posted on 2025-06-05 17:20:17 by oxo

Good show!

Interesting topic of which I didn't knew anything about. Until after I listened to your show. Steganography will be on my someday list, to dive deeper into. Thank you mightbemike!

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