Publications (22)
ScamChatBot: An End-to-End Analysis of Fake Account Recovery on Social Media via Chatbots
Bhupendra Acharya, Dominik Sautter, Muhammad Saad +1
Social media platforms have become the hubs for various user interactions covering a wide range of needs, including technical support and services related to brands, products, or u…
Phenotyping TPF via Self-Supervised Learning: A Label-Agnostic Framework with Expert Validation
Miral Elnakib, Muhammad Saad, Ahmad Al-Kabbany
The full potential of artificial intelligence in tibial plateau fracture characterisation remains unrealised, constrained by a fundamental dependency on labelled datasets whose con…
e-PoS: Making Proof-of-Stake Decentralized and Fair
Muhammad Saad, Zhan Qin, Kui Ren +2
Blockchain applications that rely on the Proof-of-Work (PoW) have increasingly become energy inefficient with a staggering carbon footprint. In contrast, energy-efficient alternati…
Towards a Two-Tier Hierarchical Infrastructure: An Offline Payment System for Central Bank Digital Currencies
Mihai Christodorescu, Wanyun Catherine Gu, Ranjit Kumaresan +8
Digital payments traditionally rely on online communications with several intermediaries such as banks, payment networks, and payment processors in order to authorize and process p…
Conning the Crypto Conman: End-to-End Analysis of Cryptocurrency-based Technical Support Scams
Bhupendra Acharya, Muhammad Saad, Antonio Emanuele Cinà +5
The mainstream adoption of cryptocurrencies has led to a surge in wallet-related issues reported by ordinary users on social media platforms. In parallel, there is an increase in a…
Exploring Spatial, Temporal, and Logical Attacks on the Bitcoin Network
Muhammad Saad, Victor Cook, Lan Nguyen +2
In this paper, we explore the partitioning attacks on the Bitcoin network, which is shown to exhibit spatial bias, and temporal and logical diversity. Through data-driven study we…