Belkasoft Evidence Center 2020 v. 9.7 Has Been Released: What’s New?

The new edition of BEC broadens its support for different mobile data sources and levels up its remote forensic module. In addition, a range of more specific features has been introduced.

Major improvements and updates are as follows:

– Acquisition of MTK-based (MediaTek) devices.
– Acquisition via MTP/PTP protocols.
– iOS 13 support added.
– Huawei and Xiaomi Backups.
– macOS is added to the Remote Forensics Module.
– Remote agents can be deployed via WMI.
– CarPlay app supported.
– Connection Graph has refreshed look and feel.
– Advanced Photo Analysis on the basis of an efficient Artificial Neural Network integrated into the update.

More details are available at https://belkasoft.com/new

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To upgrade your BEC to the latest version please go to https://belkasoft.com/get

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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.

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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.

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

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

A Systematic Approach to Understanding MACB Timestamps on Unixlike Systems

Forensic Focus 21st June 2022 5:00 am

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