2 research outputs found
A Method for Specifying Complex Real-Time Systems With Application to an Experimental Variable Stability Helicopter
Engineering systems increasingly contain a significant element of embedded software. The specification of such systems causes problems because of the diversity of the sub-systems which they contain. For example, in modem aerospace systems a combination of mechanical, electrical, hydraulic and digital sub-systems need to function together in a safety-critical manner. The need is for a uniform means of specification which spans the whole diversity of sub-systems and which serves both to verify and to validate the functional aspects of the total system
Smurf : A reliable method for contextualising social media artefacts
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this publication may be reproduced without the written
permission of the copyright ownerThis research aims to evaluate whether artefacts other than the content of user com munication on social media can be used to attribute actions or relationships to a user.
Social Media has enhanced the way users communicate on the Internet; providing
the means for users to share content in real-time, and to establish connections and
social relationships with like-minded individuals. However, as with all technology,
social media can be leveraged for disagreeable and/or unlawful activities such as
cyber bullying, trolling, grooming, or luring. There are reported cases where evidence from social media was used to secure
convictions; for example, the tragic cases of Ashleigh Hall in 2009 and Kayleigh
Haywood in 2015. The social media evidence e.g. the messages sent to the victim to
arrange a meet up was used to link the suspect to the victim, and attribute actions
to the suspect; in addition to other physical evidence presented as part of the case.
Investigations with elements of social media is growing within digital forensics. This
reinforces the need for a technique that can be used to make inferences about user
actions and relationships, especially during a live triage investigation where the
information needs to be obtained as quickly as possible. This research evaluates the use of live triage in the investigation of social media
interactions, in order to determine the reliability of such a technique as a means
of contextualising user activity, and attributing relationships or actions to a user.
This research also evaluates the reliability of artefacts other than the actual content
exchanged on social media; in the event that the content of communication is not
immediately accessible/available to the investigator. To achieve this, it was important
to break down the events that occur before, during and after user activity on social
media; followed by the determination of what constitutes communication content in
the context of this research. This research makes the following contributions: establishes a method for the cat egorisation of social media artefacts based on perceived user activity; communication
content was characterised, thus highlighting evidential data of interest from user
social media activity; the criteria for assessing the reliability of social media artefacts
in a live triage investigation was proposed; a novel framework for social media
investigation was developed with a Proof of Concept (PoC) to test its viability. The
PoC demonstrates that it is possible to attribute actions or relationships to a user,
using artefacts other than the actual content exchanged on social media.Ph