Digital Evidence Bag

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File Format
Name Digital Evidence Bag
Extension(s) .bag, .tag, .index

Bag it and tag it, electronically, with a Digital Evidence Bag. It's the computerized version of an evidence bag used to store things kept to solve a case and convict a perpetrator.

A Digital Evidence Bag actually consists of several related files:

  • A .bag file containing the raw data (network captures, device bit stream, etc.)
  • A .tag file containing metadata (in plain text) that is specific to the case.
  • A .index file containing metadata related to the data sources, file formats, and devices used.

Like with a lot of obvious, generic concepts, somebody is trying to get a patent on this whole idea of keeping evidence in a digital file with a tag file accompanying it.


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