Title: Recovering Graphics Files
Course: CAP 2141 Digital Forensics II

Introduction

Herodotus, an entertaining but less than reliable Greek historian, reports a more ingenious method. Histaeus, ruler of Miletus, wanted to send a message to his friend Aristagorus, urging revolt against the Persians. Histaeus shaved the head of his most trusted slave, then tattooed a message on the slave's scalp. After the hair grew back, the slave was sent to Aristagorus with the message safely hidden.

Objectives

At the end of this module the student will be able to:

- Describe types of graphics file formats
- Explain types of data compression
- Explain how to locate and recover graphics files
- Describe how to identify unknown file formats
- Explain copyright issues with graphics

Readings and Resources

- Textbook: Chapter 10 pg. 381-414
- Computer Graphics Metafile: http://en.wikipedia.org/wiki/Computer_Graphics_Metafile
- Exchangeable image file format: http://en.wikipedia.org/wiki/Exif