6 papers
AI Forensics Across White-, Grey-, and Black-Box Access: A Process Model and Research Agenda for Post-Incident Investigation of AI Systems
Ali Dehghantanha, Sajad Homayoun
AI systems are increasingly involved in decisions and actions that may later require investigation. When an AI related incident occurs, investigators need to reconstruct what the s…
SoK: The Attack Surface of Agentic AI - Tools and Autonomy
Ali Dehghantanha, Sajad Homayoun
Recent AI systems combine large language models with tools, external knowledge via retrieval-augmented generation (RAG), and even autonomous multi-agent decision loops. This agenti…
TLS Certificate and Domain Feature Analysis of Phishing Domains in the Danish .dk Namespace
Athanasios P. Pelekoudas, Epameinondas Bolis, Jasmin Lindner +5
Phishing attacks remain a persistent cybersecurity threat, and the widespread adoption of TLS certificates has unintentionally enabled malicious websites to appear trustworthy to u…
Integrating Privacy Enhancing Techniques into Blockchains Using Sidechains
Reza M. Parizi, Sajad Homayoun, Abbas Yazdinejad +2
Blockchains are turning into decentralized computing platforms and are getting worldwide recognition for their unique advantages. There is an emerging trend beyond payments that bl…
A Blockchain-based Framework for Detecting Malicious Mobile Applications in App Stores
Sajad Homayoun, Ali Dehghantanha, Reza M. Parizi +1
The dramatic growth in smartphone malware shows that malicious program developers are shifting from traditional PC systems to smartphone devices. Therefore, security researchers ar…
Know Abnormal, Find Evil: Frequent Pattern Mining for Ransomware Threat Hunting and Intelligence
Sajad Homayoun, Ali Dehghantanha, Marzieh Ahmadzadeh +2
Emergence of crypto-ransomware has significantly changed the cyber threat landscape. A crypto ransomware removes data custodian access by encrypting valuable data on victims' compu…