How To Collect And Share Digital Evidence Files With Prosecutors

In this short How To video, digital forensic specialist Rich Frawley will show you how to collect and share digital evidence files with prosecutors and third parties using ADF Software. This video is ideal for learning how to share evidence with prosecutors for review.

If you are tasked with the collecting specific files or collecting all files from a specific location, ADF digital forensic software makes this fast and easy. Collecting and sharing evidence can be useful

• due to a legal hold
• specific need in your investigation
• a limitation placed on of claimed privilege
• legal limitations set forth by a judge

This lesson is helpful if, for instance, if you have a need to collect only PDF files from a specific computer or collect all files from a specific User Profile.

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File timestamps are used by forensics practitioners as a fundamental artifact. For example, the creation of user files can show traces of user activity, while system files, like configuration and log files, typically reveal when a program was run.

Despite timestamps being ubiquitous, the understanding of their exact meaning is mostly overlooked in favor of fully-automated, correlation-based approaches. Existing work for practitioners aims at understanding Windows and is not directly applicable to Unix-like systems.

In this paper, we review how each layer of the software stack (kernel, file system, libraries, application) influences MACB timestamps on Unix systems such as Linux, OpenBSD, FreeBSD and macOS.

We examine how POSIX specifies the timestamp behavior and propose a framework for automatically profiling OS kernels, user mode libraries and applications, including compliance checks against POSIX.

Our implementation covers four different operating systems, the GIO and Qt library, as well as several user mode applications and is released as open-source.

Based on 187 compliance tests and automated profiling covering common file operations, we found multiple unexpected and non-compliant behaviors, both on common operations and in edge cases.

Furthermore, we provide tables summarizing timestamp behavior aimed to be used by practitioners as a quick-reference.

Learn more: https://dfrws.org/presentation/a-systematic-approach-to-understanding-macb-timestamps-on-unixlike-systems/

YouTube Video UCQajlJPesqmyWJDN52AZI4Q_i0zd7HtluzY

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