What do you mean by forensically sound copy of hard disk?

Glossary definition Forensically sound data collection refers to the process by which ESI is collected for ediscovery without any alteration or destruction of either the data or its metadata. To be forensically sound, the collection process must be defensible: consistent, repeatable, well documented, and authenticated.

What is a forensically sound image?

Forensically Sound Evidence In the context of disk imaging, digital forensics professionals qualify the term by stating that, to be forensically sound, the disk image must be a bit-for-bit copy of the original (i.e., an exact copy).

What is forensically sound evidence?

1. Digital evidence is said to be forensically sound if it was collected, analyzed, handled and stored in a manner that is acceptable by the law, and there is reasonable evidence to prove so.

Is DD forensically sound?

While dd can and has been used to acquire forensically sound images, versions of dd are available that are specifically designed for forensic use. The first of these to be examined is dcfldd, created for the Defense Computer Forensics Laboratory by Nick Harbour.

What does a forensically verified image mean?

A forensic image is an image or exact, sector by sector, copy of a hard disk, taken using software such as Paraben Lockdown/Forensic Replicator or Logicube Forensic Dossier.

What is a forensically verified image?

A forensic image (forensic copy) is a bit-by-bit, sector-by-sector direct copy of a physical storage device, including all files, folders and unallocated, free and slack space.

Is rooting forensically sound?

As such, rooting is not forensically reliable. Furthermore, root access to obtain the dd image requires the installation of a 3rd-party program in the phone. This would make the acquired data is used as evidence, inadmissible in court.

Why is bit stream copy important?

Without an accurate bit stream backup, the results of computer evidence processing may be inaccurate.

Why would a forensic practitioner obtain a forensic image?

Creating and backing up a forensic image helps prevent loss of data due to original drive failures. The loss of data as evidence can be detrimental to legal cases. Forensic imaging can also prevent the loss of critical files in general.

How do forensics use DD?

The dd Command in a Forensics Context

  1. Create MD5 checksum of the disk using the md5sum command.
  2. Create image file of the disk using the dd command.
  3. Create MD5 checksum of the image file using the md5sum command.
  4. Compare the MD5 checksum of the disk image file with the MD5 checksum of the disk.

What is the recommended forensic image format for creating a forensic image of CCTV DVR hard drive?

DVR Examiner’s imaging program creates “DD,” or raw images, which are the ideal way to work with images in DVR Examiner.