Computer forensics is a process of obtaining information from computer sources for legal purposes. When computers became more common in the 1980s, it opened a window for all new types of crime. People could use computers for hacking into others’ personal information, and also other crimes such as child pornography, cyberstalking, rape, and murder. Computer forensics is the science of retrieving information through computers for evidence of these crimes.
Computer forensics can be very simple if the information one is looking for is easy to find, but it can also be very challenging and require experts for certain cases. A common technique in computer forensics is recovering deleted files. When a file is deleted from a computer, it is usually retrievable by some means. File carving is the process of searching for files within the operating system to find deleted data.
http://en.wikipedia.org/wiki/Computer_forensics
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