ICT378 Cyber Forensics and Incident Response (TJD, 2025)
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Exif is an
enhancement of___________and TIF formats that modifies the beginning of a
JPEG or TIF file so that metadata can be inserted. Metadata contains some
information like Date and time, manufacturer, resolution, camera model.
Unlike JPEGs, GIFs,
and BMP images,
________________are not made up of a grid of pixels. Instead, they are comprised
of paths, which are defined by a start and end point, along with other points,
curves, and angles along the way.
Steganalysis is the process of detecting messages hidden with steganography. In other words, steganalysis is about separating cover messages from stego messages.
A ’s image quality on a monitor is governed by resolution, which determines the amount of detail that’s displayed.
is a technique for adding copyright notices or other verification messages to digital audio, video, or image signals and documents, which is closely connected to steganography.
Sometimes even after attempts of data deletion, there is an amount of data left on the disk; such residual data is referred as data .
is a method of data compression in which the
size of the file is reduced by eliminating data in the file. In doing so, image
quality is sacrificed to decrease file size. Any data that the compression
algorithm deems expendable is removed from the image, thereby reducing its
size.
SSDs are very immune to degaussing as they don’t depend on similar magnetic structures such as hard disk drive or storage.
Digital shredding is similar to wiping where
you erase a portion of the hard disk drive and overwrite it with random data. Formatting
the disk or deleting its content
removesthe data from
the disk.
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