Rather than talk about security news, today’s video gives you a quick lesson on steganography–the practice of concealing secret messages in other data. If you follow the blog, you may have seen Marc Laliberte’s post on Historical Cryptographic Ciphers. If not, I highly recommend you read it to learn how the original cryptographic ciphers worked, and evolved over time. Not only will it teach about the roots of cryptography, but you can amaze your friends by solving simple cryptographic puzzles. In the spirit of this education, today’s video continues the trend with a quick primer on steganography–not to be confused with cryptography.
Watch below to learn more.
Episode Runtime: 8:37
Direct YouTube Link: https://www.youtube.com/watch?v=x1wMXaHRPIU
- Wikipedia entry on Steganography – Wikipedia
- Research paper on least significant bit steganography [PDF] – Ijact.org
- Decent video description of least significant bit – YouTube
- OpenStego steganography program – OpenStego.com
- iSteg steganography tool – hanynet.com
- Coagula image synth program – abc.se
- Sonic Visualizer program to visualize audio spectrum – Sonic Visualizer