Dr Panos Andriotis' Outputs (19)

Bu-Dash: A universal and dynamic graphical password scheme (2022)
Presentation / Conference Contribution

Biometric authentication gradually replaces knowledge-based methods on mobile devices. However, Personal Identification Numbers, passcodes, and graphical password schemes such as the Android Pattern Unlock (APU) are often the primary means for authen... Read More about Bu-Dash: A universal and dynamic graphical password scheme.

Feature vulnerability and robustness assessment against adversarial machine learning attacks (2021)
Presentation / Conference Contribution

Whilst machine learning has been widely adopted for various domains, it is important to consider how such techniques may be susceptible to malicious users through adversarial attacks. Given a trained classifier, a malicious attack may attempt to craf... Read More about Feature vulnerability and robustness assessment against adversarial machine learning attacks.

To allow, or deny? That is the question (2020)
Presentation / Conference Contribution

The Android ecosystem is dynamic and diverse. Controls have been set in place to allow mobile device users to regulate exchanged data and restrict apps from accessing sensitive personal information and system resources. Modern versions of the operati... Read More about To allow, or deny? That is the question.

Emotional bots: Content-based spammer detection on social media (2019)
Presentation / Conference Contribution

Recent research indicates that a considerable amount
of content on social media is generated by automated accounts. The automata present sophisticated behavior –
mimicking humans– aiming at evading traditional detection
methods. In this paper, we... Read More about Emotional bots: Content-based spammer detection on social media.

MAMADROID: Detecting Android Malware by Building Markov Chains of Behavioral Models (2017)
Presentation / Conference Contribution

The rise in popularity of the Android platform has resulted in an explosion of malware threats targeting it. As both Android malware and the operating system itself constantly evolve, it is very challenging to design robust malware mitigation techniq... Read More about MAMADROID: Detecting Android Malware by Building Markov Chains of Behavioral Models.

Permissions snapshots: Assessing users' adaptation to the Android runtime permission model (2017)
Presentation / Conference Contribution

© 2016 IEEE. The Android operating system changed its security-and privacy-related permission model recently, offering its users the ability to control resources that applications are allowed to access on their devices. This major change to the tradi... Read More about Permissions snapshots: Assessing users' adaptation to the Android runtime permission model.

Privacy decision-making in the digital era: A game theoretic review (2017)
Presentation / Conference Contribution

© Springer International Publishing AG 2017. Information privacy is constantly negotiated when people interact with enterprises and government agencies via the Internet. In this context, all relevant stakeholders take privacy-related decisions. Indiv... Read More about Privacy decision-making in the digital era: A game theoretic review.

A comparative study of android users’ privacy preferences under the runtime permission model (2017)
Presentation / Conference Contribution

© Springer International Publishing AG 2017. Android users recently were given the ability to selectively grant access to sensitive resources of their mobile devices when apps request them at runtime. The Android fine-grained runtime permission model... Read More about A comparative study of android users’ privacy preferences under the runtime permission model.

Mass surveillance in cyberspace and the lost art of keeping a secret: Policy lessons for government after the snowden leaks (2016)
Presentation / Conference Contribution

© Springer International Publishing Switzerland 2016. Global security concerns, acts of terrorism and organised crime activity have motivated nation states to delve into implementing measures of mass surveillance in cyberspace, the breadth of which w... Read More about Mass surveillance in cyberspace and the lost art of keeping a secret: Policy lessons for government after the snowden leaks.

Optimizing short message text sentiment analysis for mobile device forensics (2016)
Presentation / Conference Contribution

© IFIP International Federation for Information Processing 2016. Mobile devices are now the dominant medium for communications. Humans express various emotions when communicating with others and these communications can be analyzed to deduce their em... Read More about Optimizing short message text sentiment analysis for mobile device forensics.

Impact of user data privacy management controls on mobile device investigations (2016)
Presentation / Conference Contribution

© IFIP International Federation for Information Processing 2016. There are many different types of mobile device users, but most of them do not seek to expand the functionality of their smartphones and prefer to interact with them using predefined us... Read More about Impact of user data privacy management controls on mobile device investigations.

Messaging activity reconstruction with sentiment polarity identification (2015)
Presentation / Conference Contribution

© Springer International Publishing Switzerland 2015. Sentiment Analysis aims to extract information related to the emotional state of the person that produced a text document and also describe the sentiment polarity of the short or long message. Thi... Read More about Messaging activity reconstruction with sentiment polarity identification.

A framework for describing multimedia circulation in a smartphone ecosystem (2015)
Presentation / Conference Contribution

© IFIP International Federation for Information Processing 2015. Contemporary mobile devices allow almost unrestricted sharing of multimedia and other types of files. However, because smartphones and tablets can easily access the Internet and exchang... Read More about A framework for describing multimedia circulation in a smartphone ecosystem.

Real-time monitoring of privacy abuses and intrusion detection in android system (2015)
Presentation / Conference Contribution

© Springer International Publishing Switzerland 2015. In this paper, we investigated the definition of privacy, privacy abuse behaviours, and the privacy abuse in Android systems, which may be very useful for identifying the malicious apps from ‘norm... Read More about Real-time monitoring of privacy abuses and intrusion detection in android system.

An extensible platform for the forensic analysis of social media data (2015)
Presentation / Conference Contribution

© Springer International Publishing Switzerland 2015. Visualising data is an important part of the forensic analysis process. Many cell phone forensic tools have specialised visualisation components, but are as of yet able to tackle questions concern... Read More about An extensible platform for the forensic analysis of social media data.

On the development of automated forensic analysis methods for mobile devices (2014)
Presentation / Conference Contribution

We live in a connected world where mobile devices are used by humans as valuable tools. The use of mobile devices leaves traces that can be treasured assets for a forensic analyst. Our aim is to investigate methods and exercise techniques that will m... Read More about On the development of automated forensic analysis methods for mobile devices.

Complexity metrics and user strength perceptions of the pattern-lock graphical authentication method (2014)
Presentation / Conference Contribution

One of the most popular contemporary graphical password approaches is the Pattern-Lock authentication mechanism that comes integrated with the Android mobile operating system. In this paper we investigate the impact of password strength meters on the... Read More about Complexity metrics and user strength perceptions of the pattern-lock graphical authentication method.

A pilot study on the security of pattern screen-lock methods and soft side channel attacks (2013)
Presentation / Conference Contribution

Graphical passwords that allow a user to unlock a smartphone's screen are one of the Android operating system's features and many users prefer them instead of traditional textbased codes. A variety of attacks has been proposed against this mechanism,... Read More about A pilot study on the security of pattern screen-lock methods and soft side channel attacks.

Forensic analysis of wireless networking evidence of Android smartphones (2012)
Presentation / Conference Contribution

This paper introduces a method for acquiring forensic-grade evidence from Android smartphones using open source tools. We investigate in particular cases where the suspect has made use of the smartphone's Wi-Fi or Bluetooth interfaces. We discuss the... Read More about Forensic analysis of wireless networking evidence of Android smartphones.