Search Results for author: Ioannis Agrafiotis

Found 5 papers, 0 papers with code

Catching the Phish: Detecting Phishing Attacks using Recurrent Neural Networks (RNNs)

no code implementations9 Aug 2019 Lukas Halgas, Ioannis Agrafiotis, Jason R. C. Nurse

The emergence of online services in our daily lives has been accompanied by a range of malicious attempts to trick individuals into performing undesired actions, often to the benefit of the adversary.

General Classification

A semi-supervised approach to message stance classification

no code implementations29 Jan 2019 Georgios Giasemidis, Nikolaos Kaplis, Ioannis Agrafiotis, Jason R. C. Nurse

Social media communications are becoming increasingly prevalent; some useful, some false, whether unwittingly or maliciously.

Classification General Classification +2

Nonsense Attacks on Google Assistant

no code implementations6 Aug 2018 Mary K. Bispham, Ioannis Agrafiotis, Michael Goldsmith

This paper presents a novel attack on voice-controlled digital assistants using nonsensical word sequences.

Cryptography and Security

Using semantic clustering to support situation awareness on Twitter: The case of World Views

no code implementations17 Jul 2018 Charlie Kingston, Jason R. C. Nurse, Ioannis Agrafiotis, Andrew Milich

The novelty and value of SVOSSTC is its emphasis on utilising the Subject-Verb-Object (SVO) typology in order to construct semantically consistent world views, in which individuals---particularly those involved in crisis response---might achieve an enhanced picture of a situation from social media data.

Clustering Decision Making +1

Determining the Veracity of Rumours on Twitter

no code implementations19 Nov 2016 Georgios Giasemidis, Colin Singleton, Ioannis Agrafiotis, Jason R. C. Nurse, Alan Pilgrim, Chris Willis, Danica Vukadinovic Greetham

For our work, we collected about 100 million public tweets, including users' past tweets, from which we identified 72 rumours (41 true, 31 false).

Misinformation Rumour Detection

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