Gareth Tyson

An in-depth characterisation of Bots and Humans on Twitter

2017 · arXiv (Cornell University)

Recent research has shown a substantial active presence of bots in online social networks (OSNs). In this paper we utilise our past work on studying bots (Stweeler) to comparatively analyse the usage and impact of …

Who Watches the Watchmen: Exploring Complaints on the Web

2019

Under increasing scrutiny, many web companies now offer bespoke mechanisms allowing any third party to file complaints (e.g., requesting the de-listing of a URL from a search engine). While this self-regulation might be a valuable …

Identifying Unintended Harms of Cybersecurity Countermeasures

2019

Well-meaning cybersecurity risk owners will deploy countermeasures (technologies or procedures) to manage risks to their services or systems. In some cases, those countermeasures will produce unintended consequences, which must then be addressed. Unintended consequences can …

Vetting Security and Privacy of Global COVID-19 Contact Tracing Applications

2020 · arXiv (Cornell University)

The rapid spread of COVID-19 has made traditional manual contact tracing to identify potential persons in close physical proximity to an known infected person challenging. Hence, a number of public health authorities have experimented with …

An Expert Annotated Dataset for the Detection of Online Misogyny

2021

Ella Guest, Bertie Vidgen, Alexandros Mittos, Nishanth Sastry, Gareth Tyson, Helen Margetts. Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume. 2021.

Understanding the Evolution of Blockchain Ecosystems: A Longitudinal Measurement Study of Bitcoin, Ethereum, and EOSIO

2021 · arXiv (Cornell University)

The continuing expansion of the blockchain ecosystems has attracted much attention from the research community. However, although a large number of research studies have been proposed to understand the diverse characteristics of individual blockchain systems …