# Briefing

### What's in an image?

{% hint style="warning" %}
What's in images that remains unseen at a glance?
{% endhint %}

*Metadata is information stored in nearly any image on the internet that provides information such as the camera, date, and GPS location.*

{% embed url="<https://www.ontotext.com/knowledgehub/fundamentals/metadata-fundamental/>" %}

What if you tried guessing the location of someone from just a picture? How hard would it be?

{% embed url="<https://www.geoguessr.com/trips>" %}

{% content-ref url="case-1-whats-in-an-image" %}
[case-1-whats-in-an-image](https://cybersleuth.gitbook.io/cybersleuth/day-3/case-1-whats-in-an-image)
{% endcontent-ref %}

### Can I hide secret messages in pictures?

{% hint style="warning" %}
Is it possible to hide a message in an image file?
{% endhint %}

*Steganography is the science of hiding information in images. The simplest way is to hide information by appending it onto the end of an image file.*

{% embed url="<https://www.simplilearn.com/what-is-steganography-article>" %}

{% content-ref url="case-2-secret-secret-on-the-wall" %}
[case-2-secret-secret-on-the-wall](https://cybersleuth.gitbook.io/cybersleuth/day-3/case-2-secret-secret-on-the-wall)
{% endcontent-ref %}

### Can I hide files in pictures?

{% hint style="warning" %}
Is it possible to hide files in files?
{% endhint %}

*Yes! Another common process in steganography is appending a file onto an image to hide it from unsuspecting eyes.*

{% embed url="<https://www.simplilearn.com/what-is-steganography-article>" %}

{% content-ref url="case-3-files-in-files" %}
[case-3-files-in-files](https://cybersleuth.gitbook.io/cybersleuth/day-3/case-3-files-in-files)
{% endcontent-ref %}

### Bonus Activity

{% embed url="<https://www.canva.com/design/DAE5Bblds8g/fcU5a4C-Xzeq3FCn83SysA/view>" %}

{% embed url="<https://drive.google.com/file/d/1jtiNQdiIJQMgjr5VZ8MjvRujveTB5piu/view>" %}
What's hidden in this picture?
{% endembed %}

#### Hint:

Use [CyberChef](https://gchq.github.io/CyberChef/) for this activity, and use these tools:

* [Extract EXIF](https://gchq.github.io/CyberChef/#recipe=Extract_EXIF\(\))
* [Extract Files](https://gchq.github.io/CyberChef/#recipe=Extract_Files\(true,true,true,true,true,true,false,true,100\))

### Cyber Forensics Game

{% embed url="<https://games.legendsoflearning.com/game/cybrary-quest/2616?media=game&partner=legends-public>" %}