31 May 2021

How to Hide in Plain Sight

Cyber Security

Have you ever heard of Steganography?

A complicated word that describes how people hide information where other people would never think to look. It is a really useful way of sending information without it being intercepted, as there is very little chance it would be found.

It is the job of GCHQ to find the hidden messages that are being sent between criminals who are taking part in acts such as terrorism and serious crime, and then decipher them.


hiding, ducking out the way gif | Stemettes Zine


Steganography has been used many times in the past. For example, a roman emperor hid a message on the back of one of his servant’s heads, and when he sent his servant to the recipient of the message, the servants head was shaved and the message could be read. Another example is when, during WWII, morse code dots were written onto yarn which was knitted into a cardigan, and then unravelled when at the correct location.


you sneaky thing you gif | Stemettes Zine


Now, people are more likely to use digital steganography, and there are many ways of doing this, such as:

  • Writing secret text in white in the spaces between words
  • Hiding data inside a sound file
  • Hiding data inside an image

Thank you to GCHQ for joining the Connect stream on Explore to teach us all about Steganography.

Cyber Security
Did you enjoy this article? Click on a star to rate it!
Next in this issue...
Upcoming Events
Parent, guardian, teacher or volunteer?

The Stemettes Zine is a curated space tailored specifically to Stemettes but we have plenty of content and updates for you folks too. Sign up to receive the Stemettes newsletter and we’ll keep you updated with the latest from Stemettes HQ including events, activities, resources and fundraising activities.