Cyber Crime and Cyber Terrorism

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CHAPTER 5
User requirements for cyber-security investigations
Seeking to understand the requirements of specific end-users and involving key 
stakeholders in the development of new systems or protocols is an essential part of 
any design process. In response to this, formal user requirements elicitation and par-
ticipatory ergonomics have developed to support these areas of investigation, solu-
tion generation and ultimately solution ownership (
Wilson, 1995
). User requirements 
embody critical elements that end-users and stakeholders need and want from a prod-
uct or process (
Maiden, 2008
). These requirements capture emergent behaviors and 
in order to achieve this some framework of understanding potential and plausible 
behavior is required (
Cerone and Shaikh, 2008
). Plausible behaviors encompass all 
possible behaviors that can occur. These are then mapped to system requirements 
that express how the interactive system should be designed, implemented, and used 
(
Maiden, 2008
). However, these two factors are not always balanced and solutions 
might emerge that are not fully exploited or used as intended. Participatory ergonom-
ics approaches seek to incorporate end-users and wider stakeholders within work 
analysis, design processes and solution generation as their reactions, interactions, 
optimized use and acceptance of the solutions will ultimately dictate the effective-
ness and success of the overall system performance (
Wilson et al., 2005
).
Data
requirements
Actor
6
Actor
2
Actor
1
Actor
3
Actor
5
Actor
4
Outer domain
Inner domain
Functional
requirements
FIGURE 5.1
Domains for requirements specifications.

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