Question: Why is write blocker used in digital forensic investigation?

Why are write blockers used?

Write Blocker is a tool designed to prevent any write access to the hard disk, thus permitting read-only access to the data storage devices without compromising the integrity of the data. A write blocking if used correctly can guarantee the protection of the chain of custody.

What are the advantages of physical write blockers over software write blockers?

Is not reliant on an underlying operating system or software-based subsystem. Is easier to explain and generally makes more “sense” to non-technical people. Clear visual indication of function through physical lights/switches. Generally provides built in interfaces to a number of storage devices (IDE, SATA, etc.).

At which stage of the digital forensics process would a write blocker be used?

A write blocker, which is designed to prevent the alteration of data during the copying process (Cybercrime Module 4 on Introduction to Digital Forensics), should be used before extraction whenever possible in order to prevent the modification of data during the copying process ( SWGDE Best Practices for Computer …

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What is the use of autopsy?

The principal aims of an autopsy are to determine the cause of death, mode of death, manner of death, the state of health of the person before he or she died, and whether any medical diagnosis and treatment before death was appropriate.

Does FTK Imager write blocker?

The write blocker prevents data being modified in the evidence source disk while providing read-only access to the investigator’s laptop. This helps to maintain the integrity of the source disk. The FTK Imager tool helps investigators to collect the complete volatile memory (RAM) of a computer.

Is evidence that has been acquired without a write blocker admissible in court?

Without a write blocker, any action taken by a digital forensic examiner will be recorded on the drive, no matter how minor or inconsequential. Even these miniscule changes can cast a shadow of doubt on the investigation and render any evidence collected inadmissible in a legal proceeding.

Why are analysis of file signatures and file extensions helpful to investigators?

Why do we use file signature analysis? Files have a header that provides information to the OS as to the identity of the file. The analysis will compare files and the extensions along with the header information to a database of file signatures and report the results.

What is meta carving?

File carving is a process of searching for files in a data stream based on knowledge of file formats rather than any other metadata. Carving is useful when filesystem metadata is damaged or otherwise unusable.

What is the primary objectives of digital forensic for business and industry?

The main focus of digital forensics investigations is to recover objective evidence of a criminal activity (termed actus reus in legal parlance).

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Is it OK if minor alterations occur in the evidence during forensic analysis?

Image, protect and preserve the evidence during the forensic examination from any possible alteration, damage, data corruption, or virus introduction ,insuring evidence is not damaged, tainted or in any other way rendered inadmissible in court.