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S.E. Parkin

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The increasing digitalization of power systems into “smart grids” has introduced complex cybersecurity challenges. Although technical solutions dominate research in this area, non-technical factors crucial to smart grid cybersecurity remain unknown. This paper presents a systematic review of 27 studies examining how human and organizational factors are addressed in the smart grid cybersecurity literature. Our analysis reveals three key limitations: (1) a disconnect between proposed solutions and real-world challenges; (2) an overemphasis on individual operator decision-making during cyber incidents, despite empirical evidence supporting collaborative approaches; and (3) the imprecise use of concepts like “cybersecurity awareness” and “security culture”, neglecting established human factors literature developed around these concepts. Future research should ground interventions in real-world operational complexities, ensuring alignment between empirical and methodological approaches. ...

Understanding Practitioner Challenges in Sector CSIRTs

In this paper, we study the experiences of practitioners in sectoral Computer Security Incident Response Teams (CSIRTs)—specialized teams that mediate between national cybersecurity authorities and the sector constituency. Through interviews with 18 professionals connected to the Informatiebeveiligingsdienst (IBD-CSIRT) for Dutch local governments, we uncover tensions in how key services are valued. For vulnerability notifications, while the CSIRT staff consider them a core service, many constituents hardly mention them, and systemic gaps in information forwarding mean that crucial alerts often never arrive. We extend these insights with 5 interviews across other sector CSIRTs and a validation workshop with 7 participants, all security officers from sector CSIRTs, revealing shared challenges in balancing technical expertise with sector knowledge, building trust-based relationships, and navigating institutional bottlenecks. Our findings contribute the first systematic account of how sector CSIRT professionals understand and perform their role, highlighting the tensions in providing sector-wide support to professionals with differing security needs. ...

Regulatory practitioner views on automated detection of deceptive design patterns

Conference paper (2026) - Arianna Rossi, Simon Parkin
Although deceptive design patterns are subject to growing regulatory oversight, enforcement races to keep up with the scale of the problem. One promising solution is automated detection tools, many of which are developed within academia. We interviewed nine experienced practitioners working within or alongside regulatory bodies to understand their work against deceptive design patterns, including the use of supporting tools and the prospect of automation. Computing technologies have their place in regulatory practice, but not as envisioned in research. For example, investigations require utmost transparency and accountability in all the activities we identify as accompanying dark pattern detection, which many existing tools cannot provide. Moreover, tools need to map interfaces to legal violations to be of use. We thus recommend conducting user requirement research to maximize research impact, supporting ancillary activities beyond detection, and establishing practical tech adoption pathways that account for the needs of both scientific and regulatory activities. ...

Improving Security Usability by Recognizing Where Business Needs Come First

Conference paper (2026) - Simon Parkin
There have been a great number of usability improvements put forward in user security and privacy research. However, it is not guaranteed that beneficial changes proposed in research reach practice. If an improvement is seen not to benefit the service, or to be too difficult or costly to implement, the service owner may ignore it. Equally bad for users is if powerful' stakeholders - whoever it is who has the resources and influence to make the usability change in the real world - are selective about which elements of a proposed usability improvement they are willing to implement; this risks diluting the protections that the change would have afforded for users. Here we propose a shorthand user second as user-centred' approach to preparing usability improvements to security and privacy technologies and processes. Paradoxically, this perspective promotes usability by prompting a consideration of usability improvements as a value proposition for existing systems, and consideration of how the proposed changes align with stakeholder decision-making criteria. This is as opposed to relying on an assumption of usable security and privacy as being universally beneficial - such an assumption would rely on the powerful stakeholders to appreciate the need for improvement and not dilute it in any way, in the process of transferring it into a real-world service or environment. We show how this approach may be mobilized in an adaptation of the premortem planning technique, and explore a range of case studies where usability needs were variously warped or kept intact, either with the cooperation of powerful stakeholders or without them. ...

Explaining the Persistence of Sub-optimal IoT Security Advice

The proliferation of consumer Internet of Things (IoT) devices has raised security concerns. In response, governments have been advising consumers on security measures, but these recommendations are not guaranteed to be implementable owing to the diverse and rapidly evolving IoT landscape, risking wasted efforts and uncertainty caused by unsuccessful attempts to secure devices. Through interviews and a workshop with 14 stakeholders involved in a Dutch national public awareness campaign, we found that while stakeholders recognized the validity of these concerns, they opted to continue the campaign with minor modifications while expecting regulatory changes to resolve the observed problem. Their justifications reveal an institutional incentive structure that overlooks well-documented user realities in security and privacy HCI research. This raises important considerations for the design and delivery of such support strategies. By fostering a collaborative dialogue, we aim to contribute to the development of user-centered security practices. ...
Conference paper (2025) - Marie-Therese Sekwenz, Rita Gsenger, Volker Stocker, Esther Görnemann, Dinara Talypova, Simon Parkin, Lea Greminger, Georgios Smaragdakis
This paper investigates the feasibility and potential role of using Large Language Models (LLMs) to support systemic risk audits under the European Union’s Digital Services Act (DSA). It examines how automated tools can enhance the work of DSA auditors and other ecosystem actors by enabling scalable, explainable, and legally grounded content analysis. An interdisciplinary expert workshop with twelve participants from legal, technical, and social science backgrounds explored prompting strategies for LLM-assisted auditing. Thematic analysis of the sessions identified key challenges and design considerations, including prompt engineering, model interpretability, legal alignment, and user empowerment. Findings highlight the potential of LLMs to improve annotation workflows and expand audit scale, while underscoring the continued importance of human oversight, iterative testing, and cross-disciplinary collaboration. This study offers practical insights for integrating AI tools into auditing processes and contributes to emerging methodologies for operationalizing systemic risk evaluations under the DSA. ...
Conference paper (2025) - Marie Therese Sekwenz, Ben Wagner, Simon Parkin
Platforms have a problem with harmful or illegal content online. Flagging, which is an empowering tool for users to report violating content. A new European Union law, the Digital Services Act (DSA), seeks to harmonize the regulation of the flagging process. This paper examines how these flagging mechanisms support user action through semi-structured interviews (N=12) with regulatory authorities and professional reporting experts, using a walkthrough approach (with case studies based on flagging systems on Facebook and TikTok). We found tensions between the empowerment of users with additional reporting options and how it burdens users within service interfaces and processes; users need to understand the law, participate in a legal process, and differentiate between legal options and terms of service. Design choices, like the length of necessary reporting steps, also impacted expectations on the transparency of the reporting process. We close with design insights on support for users and stakeholders in the reporting process. ...
Conference paper (2024) - Anne Kee Doing, Eduardo Barbaro, Frank van der Roest, Pieter van Gelder, Yury Zhauniarovich, Simon Parkin
A reduction in phishing threats is of increasing importance to organizations. One part of this effort is to provide training to employees, so that they are able to identify and avoid phishing emails. Yet further, simulated phishing emails are used to test whether employees will both identify and report a suspicious email. We worked with a partner bank to examine a repository of many thousands of reported emails from a behavioural perspective. We divide reported emails into categories and examine reporting trends over time relative to training and phishing simulation campaigns. Among our findings, the level of reporting of benign emails is comparable to the number of malicious emails reported, and we see indications that training and simulations amplify the reporting of benign emails. Our analysis uncovers reporting patterns for unique reporters per email campaign as a promising indicator for the security-related culture around phishing prevention. Evidence from our analysis informs recommendations, such as providing reporting infrastructure for reporting not only malicious emails, but also benign but suspicious work-related emails, in a manner that minimises the disruption for users erring on the side of caution when assessing emails. ...

A co-design approach to understanding security support interactions in a large university

Journal article (2024) - Albesë Demjaha, David Pym, Tristan Caulfield, Simon Parkin
Increasingly, organizations are acknowledging the importance of human factors in the management of security in workplaces. There are challenges in managing security infrastructures in which there may be centrally mandated and locally managed initiatives to promote secure behaviours. We apply a co-design methodology to harmonize employee behaviour and centralized security management in a large university. This involves iterative rounds of interviews connected by the co-design methodology: 14 employees working with high-value data with specific security needs; seven support staff across both local and central IT and IT-security support teams; and two senior security decision-makers in the organization. We find that employees prefer local support together with assurances that they are behaving securely, rather than precise instructions that lack local context. Trust in support teams that understand local needs also improves engagement, especially for employees who are unsure what to do. Policy is understood by employees through their interactions with support staff and when they see colleagues enacting secure behaviours in the workplace. The iterative co-design approach brings together the viewpoints of a range of employee groups and security decision-makers that capture key influences that drive secure working practices. We provide recommendations for improvements to workplace security, including recognizing that communication of the policy is as important as what is in the policy. ...

A Qualitative Analysis of Cybersecurity Awareness Vendors’ Promises

Conference paper (2024) - Jonas Hielscher, Markus Schöps, Jens Opdenbusch, Felix Reichmann, Marco Gutfleisch, Karola Marky, Simon Parkin
Security awareness and training (SAT) vendors operate in a growing multi-billion dollar market. They publish various marketing promises on their websites to their customers -- organizations of all sizes. This paper investigates how these promises align with customers' needs, how they relate to human-centered security challenges highlighted in prior research, and what narrative is presented regarding the role of employees (as SAT recipients). We also investigate the level of transparency in vendor promises, as to whether it constitutes an information asymmetry. We gathered search terms from n=30 awareness professionals to perform an automated Google search and scraping of SAT vendors' websites. We then performed a thematic analysis of 2,476 statements on 156 websites from 59 vendors. We found that the messaging from SAT vendors precisely targets customers' need for easy-to-implement and compliance-fulfilling SAT products; how SAT products are offered also means that some of the impacts of SAT go unmentioned and are transferred to the customer, such as user support. In this vendor-customer relationship, employees are portrayed as a source of weaknesses, needing an indefinite amount of training to be incorporated into the organization's protection. We conclude with suggestions for SAT vendors and regulators, notably toward an SAT ecosystem that directly links SAT solutions to usable security technologies within the organization environment. ...

Deconstructing Drivers And Goals of Organizational Security Awareness

Conference paper (2024) - Jonas Hielscher, Simon Parkin
Security awareness campaigns in organizations now collectively cost billions of dollars annually. There is increasing focus on ensuring certain security behaviors among employees. On the surface, this would imply a user-centered view of security in organizations. Despite this, the basis of what security awareness managers do and what decides this are unclear. We conducted n = 15 semi-structured interviews with full-time security awareness managers, with experience across various national and international companies in European countries, with thousands of employees. Through thematic analysis, we identify that success in awareness management is fragile while having the potential to improve; there are a range of restrictions, and mismatched drivers and goals for security awareness, affecting how it is structured, delivered, measured, and improved. We find that security awareness as a practice is underspecified, and split between messaging around secure behaviors and connecting to employees, with a lack of recognition for the measures that awareness managers regard as important. We discuss ways forward, including alternative indicators of success, and security usability advocacy for employees. ...

A scenario-based approach to assessing organizational cyber-risk perception

Journal article (2023) - Simon Parkin, Kristen Kuhn, Siraj A. Shaikh
The executive leadership in corporate organizations is increasingly challenged with managing cyber-risks, as an important part of wider business risk management. Cyber-risks are complex, with the threat landscape evolving, including digital infrastructure issues such as trust in networked supply chains, and emerging technologies. Moreover, engaging organizational leadership to assess for risk management is also difficult. This paper reports on a scenario-driven, workshop-based study undertaken with executive leadership to assess for cybersecurity and cyber-risk perception related to preparation for, and response to, potential incidents. The study involves leadership members at a large public-private organization. Our approach utilizes scenarios, which are structured in their design to explore and analyse aspects of business risk, risk ownership, technological complexity, and uncertainty faced by an organizational leadership. The method offers a means to engage with leadership at real-world organizations, capturing capacity and insights to manage business risks due to cyberattacks. ...

SOC Workflows and Decisions in the Management of NIDS Rules

Signature-based network intrusion detection systems (NIDSs) and network intrusion prevention systems (NIPSs) remain at the heart of network defense, along with the rules that enable them to detect threats. These rules allow Security Operation Centers (SOCs) to properly defend a network, yet we know almost nothing about how rules are created, evaluated and managed from an organizational standpoint. In this work, we analyze the processes surrounding the creation, management, and acquisition of rules for network intrusion detection. To understand these processes, we conducted interviews with 17 professionals who work at Managed Security Service Providers (MSSPs) or other organizations that provide network monitoring as a service or conduct their own network monitoring internally. We discovered numerous critical factors, such as rule specificity and total number of alerts and false positives, that guide SOCs in their rule management processes. These lower-level aspects of network monitoring processes have generally been regarded as immutable by prior work, which has mainly focused on designing systems that handle the resulting alert flows by dynamically reducing the number of noisy alerts SOC analysts need to sift through. Instead, we present several recommendations that address these lower-level aspects to help improve alert quality and allow SOCs to better optimize workflows and use of available resources. These recommendations include increasing the specificity of rules, explicitly defining feedback loops from detection to rule development, and setting up organizational processes to improve the transfer of tacit knowledge. ...

A User Study of Recovery from Flubot Smartphone Malware

The smishing-based malware Flubot was taken down in mid-2022, yet there is little understanding of how it directly impacted smartphone users. We engage with customers of a partner Internet Service Provider (ISP), who have suffered a Flubot infection on their smartphones. We surveyed 87 ISP customers who had been notified of a Flubot infection, in the months around and preceding the take-down of Flubot. We found that slightly over half of respondents were unaware of the malware infection before being notified, though many others had suspicions. We also observe that just over half of respondents experienced non-technical harms from the malware, with many experiencing harms before notification and several experiencing unwanted or aggressive activity from users of other infected devices. Many respondents reported not having removed the malware, while some discarded the infected device or stopped using online services in their efforts to be more secure afterwards. We offer recommendations, including that clearer guidance be sought to help users identify a malware infection (and not a focus only on prevention), and support provided for recovery from personal harms caused by mobile malware, as the impacts are not only technical. ...
Journal article (2022) - Simon Parkin, Luca Viganò
Journal article (2022) - Andrew Tomlinson, Simon Parkin, Siraj Ahmed Shaikh
The decisions involved in choosing technology components for systems are poorly understood. This is especially so where the choices pertain to system security and countering the threat of cybersecurity attack. Although common in some commercial products, secure hardware chips provide security functions such as authentication, secure execution and integrity validation on system start, and are increasingly deemed to have a role in devices across sectors, such as IoT devices, autonomous vehicle systems and critical infrastructure components. To understand the decisions and opinions regarding the adoption of secure hardware, we conducted 23 semi-structured interviews with senior decision-makers from companies spanning a range of sectors, sizes and supply-chain roles. Our results consider the business propositional drivers, barriers and economic factors that influence the adoption decisions. Understanding these would help those seeking to influence the adoption process, whether as a business decision, or as a trade or national strategy. ...

How system administration work was affected by COVID-19

Journal article (2022) - M. Kaur, S.E. Parkin, M.F.W.H.A. Janssen, T. Fiebig
The ongoing global COVID-19 pandemic made working from home – wherever working remotely is possible the norm for what had previously been office-based jobs across the world. This change in how we work created a challenging situation for system administrators (sysadmins), as they are the ones building and maintaining the digital infrastructure our world relies on. In this paper, we examine how system administration work changed early in the pandemic from sysadmins’ personal perspectives, through semi-structured interviews and thematic analysis. We find that sysadmins faced a two-sided crisis: While sysadmins’ own work environment changed, they also had to react to the new situation and facilitate stable options to work online for themselves and their colleagues, supporting their users in adapting to the crisis. This finding embeds into earlier work on the connection between IT (security) work and the notion of ‘care’, where we substantiate these earlier findings with results from a repeatable method grounded in coordination theory. Furthermore, while we find that sysadmins perceived no major changes in the way they work, by consecutively probing our interviewees, we find that they did experience several counter-intuitive effects on their work. This includes that while day-to-day communication became inherently more difficult, other tasks were streamlined by the remote working format and were seen as having become easier. Finally, by structuring our results according to a model of coordination and communication, we identify changes in sysadmins’ coordination patterns. From these we derive recommendations for how system administration work can be coordinated, ranging beyond the immediate pandemic response and the transition to any ‘new normal’ way of working. ...

Usability, Security, and Perspectives on User Control

Conference paper (2022) - Maina Korir, Simon Parkin, Paul Dunphy
User-centric digital identity initiatives are emerging with a mission to shift control over online identity disclosures to the individual. However, there is little representation of prospective users in discussions of the merits of empowering users with new data management responsibilities and the acceptability of new technologies. We conducted a user study comprising a contextual inquiry and semi-structured interviews using a prototype decentralized identity wallet app with 30 online participants. Our usability analysis uncovered misunderstandings about decentralized identifiers (DIDs) and pain points relating to using QR codes and following the signposting of cross-device user journeys. In addition, the technology did not readily resolve questions about whether the user, identity provider, or relying party was in control of data at crucial moments. We also learned that users' judgments of data minimization encompass a broader scope of issues than simply the technical provision of the identity wallet. Our results contribute to understanding future user-centric identity technologies from the view of privacy and user acceptance. ...
Journal article (2022) - Simon Parkin, Yi Ting Chua
Cybersecurity controls are deployed to manage risks posed by malicious behaviours or systems. What is not often considered or articulated is how cybersecurity controls may impact legitimate users (often those whose use of a managed system needs to be protected, and preserved). This oversight characterises the blunt' nature of many cybersecurity controls. Here we present a framework produced from consideration of concerns across methods from cybercrime opportunity reduction and behaviour change, and existing risk management guidelines. We illustrate the framework and its principles with a range of examples and potential applications, including management of suspicious emails in organizations, and social media controls. The framework describes a capacity to improve the precision of cybersecurity controls by examining shared determinants of negative and positive behaviours in a system. This identifies opportunities for risk owners to better protect legitimate users while simultaneously acting to prevent malicious activity in a managed system. We describe capabilities for a novel approach to managing sociotechnical cyber risk which can be integrated alongside elements of typical risk management processes. This includes consideration of user activities as a system asset to protect, and a consideration of how to engage with other stakeholders in the identification of behaviours to preserve in a system. ...

Security economics for behaviour intervention support in organizations

Journal article (2022) - Albesë Demjaha, Simon Parkin, David Pym
Security policy-makers (influencers) in an organization set security policies that embody intended behaviours for employees (as decision-makers) to follow. Decision-makers then face choices, where this is not simply a binary decision of whether to comply or not, but also how to approach compliance and secure working alongside other workplace pressures, and limited resources for identifying optimal security-related choices. Conflict arises because of information asymmetries present in the relationship, where influencers and decision-makers both consider costs, gains, and losses in ways which are not necessarily aligned. With the need to promote good enough' decisions about security-related behaviours under such constraints, we hypothesize that actions to resolve this misalignment can benefit from constructs from both traditional economics and behavioural economics. Here we demonstrate how current approaches to security behaviour provisioning in organizations mirror rational-agent economics, even where behavioural economics is embodied in the promotion of individual security behaviours. We develop and present a framework to accommodate bounded security decision-making, within an ongoing programme of behaviours which must be provisioned for and supported. Our four stage plan to Capture, Adapt, Realign, and Enable behaviour choices provides guidance for security managers, focusing on a more effective response to the uncertainty associated with security behaviour in organizations. ...