Digital Forensics CH10

Steganography

_________ has also been used to protect copyrighted material by inserting digital watermarks into a file.

True

Bitmap images are collections of dots, or pixels, that form an image.

EXIF

The majority of digital cameras use the _______ format to store digital pictures.

Literary works

Under copyright laws, computer programs may be registered as _______.

Lossy

______ compression compresses data by permanently discarding bits of information in the file.

Insertion

_______ steganography places data from the secret file into the host file without displaying the secret data when you view the host file in its associated program.

Steganography

________ is the art of hiding information inside image files.

Substitution

________ steganography replaces bits of the host file with other bits of data.

False

Operating systems do not have tools for recovering image files.

True

If a graphics file is fragmented across areas on a disk, first you must recover all the fragments to re-create the file.

Copyright

When working with image files, computer investigators also need to be aware of ________ laws to guard against copyright violations.

True

With many computer forensics tools, you can open files with external viewers.

Graphic Editors

You use _________ to create, modify, and save bitmap, vector, and metafile graphics files.

Bitmap

_______ images store graphics information as grids of individual pixels.

Header Data

If you can't open an image file in an image viewer, the next step is to examine the file's _________.

Carving

Recovering pieces of a file is called _______.

False

Steganography cannot be used with file formats other than image files.

TIFF

The file format XIF is derived from the more common ____ file format.

Vector Graphics

_________ are based on mathematical instructions that define lines, curves, text, ovals, and other geometric shapes.

Demosaicing

The process or converting raw picture data to another format is referred to as _________.

Hexadecimal

The simplest way to access a file header is to use a(n) ________ editor.

JPEG

A(n) ______ file has a hexadecimal header value of FF D8 FF E0 00 10.