Understanding The Basics Of Computer Forensics

By Shirley Hayes


The adoption of various kinds of computers in personal, corporate, and government processes is leading to a new form of crime referred to as cybercrime. Cybercrime is any kind of crime facilitated by computers. Cybercrime is growing at a very fast rate, something that is making it necessary to formulate strategies for combating this new threat. In a bid to combat cybercrime, a new field of study known as computer forensics (CF) has emerged worldwide.

This field also goes by the name computer forensic science. Albemarle, NC, is home to some of the best experts in this field. Computer forensic science is a branch within the field of digital forensic science. As a field of study, it pertains to all evidence gathered from computing devices and digital storage media. Experts in this field aim to collect, analyze, and report on digital data in a way that is legally admissible. They use data that is stored digitally to prevent and detect crime.

In the current way of life, the application of computer forensic science is almost in all professions. The professions in which this science does not apply are countable. Law enforcement agencies are the earliest bodies to have used CF in their operations. These agencies also remain to be the heaviest user of this science, contributing enormously to developments observed in the field.

The actions of law enforcement officers and criminals are increasingly making computers active crime scenes. Computers are made active crime scenes when cyber-attacks are directed at them. Criminal investigations also find computers to be useful sources of information. Information such as emails, browsing history, and documents can be used to solve criminal cases like a kidnapping.

The scope of CF goes well beyond retrieving emails and files from computers. It involves analyzing metadata to collect more useful information from these documents. Information contained in metadata can be used to know the exact date a file first appeared on a computer. It is also possible to know the last date of access, printing, editing, and saving. The user who carried all the aforementioned activities can also be known through metadata.

Commercial organizations have in the recent past used CF in a number of cases to their own benefit. Some of the areas in which this science has been used by commercial organizations include intellectual property theft, industrial espionage, employment disputes, fraud investigations, and forgeries. Additional cases include bankruptcy investigations, regulatory compliance, and internet use and inappropriate emails in workplaces.

The field employs different techniques during investigation. The main techniques are stochastic forensics, steganography, cross-drive analysis, deleted files, and live analysis. Information from multiple hard drives is usually correlated through cross-drive analysis.

CF examination is a single process that is comprised of six separate steps. These steps include readiness, presentation, review, collection, evaluation, and analysis. The list above is not in a chronological order. Although very crucial, the readiness step is often overlooked. Legal, administrative, and technical are the three broad categories of issues that prevail in this field.




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