Tahir Ahmad

• Doctor of Philosophy
• Researcher at Fondazione Bruno Kessler

In recent years, the design of effective authorization mechanisms for IoT and, in particular, for smart home applications has gained increasing attention from researchers and practitioners. However, very little attention is given to the performance evaluation of those authorization mechanisms. To fill this gap, this paper presents a thorough experi...

Development of Artificial Intelligence (AI) is inherently tied to the development of data. However, in most industries data exists in form of isolated islands, with limited scope of sharing between different organizations. This is an hindrance to the further development of AI. Federated learning has emerged as a possible solution to this problem in...

Development of Artificial Intelligence (AI) is inherently tied to the development of data. However, in most industries data exists in form of isolated islands, with limited scope of sharing between different organizations. This is an hindrance to the further development of AI. Federated learning has emerged as a possible solution to this problem in...

The Internet of Things (IoT) is radically changing the way people live and interact with society: ranging from wearables to smart cities, the number of IoT devices has grown exponentially. The Message Queuing Telemetry Transport (MQTT) protocol is one of the most widely used IoT communication protocols. However, our investigation over publicly avai...

The pervasiveness of Internet of Things (IoT) solutions have stimulated research on the basic security mechanisms needed in the wide range of IoT use case scenarios, ranging from home automation to industrial control systems. We focus on access control for cloud-edge based IoT solutions for which—in previous work—we have proposed a lazy approach to...

The pervasiveness of Internet of Things (IoT) solutions have stimulated research on the basic security mechanisms needed in the wide range of IoT use case scenarios, ranging from home automation to industrial control systems. We focus on access control for cloud-edge based IoT solutions for which-in previous work-we have proposed a lazy approach to...

The Internet of Things (IoT) is receiving considerable attention from both industry and academia because of the new business models that it enables and the new security and privacy challenges that it generates. Major Cloud Service Providers (CSPs) have proposed platforms to support IoT by combining cloud and edge computing. However, the security me...

Internet Censorship is unceasingly increasing in many countries worldwide in order to restrict web contents within the country premises. According to latest Open Net Initiative (ONI) report, almost 50 countries are involved in web censorship, including Pakistan. This paper presents the methodology and the measurement analysis based on publicly avai...

Censorship is becoming increasingly pervasive on the Internet, with the Open Net Initiative reporting nearly 50 countries practicing some form of censorship. Previous work has reported the existence of many forms of Internet censorship (e.g., DNS tampering, packet filtering, connection reset, content filtering), each of which may be composed to bui...

Non-cryptographic hash functions have been investigated to identify their pseudo-random nature when employed in the implementation of hash tables for real-time storage and look-up of uniform resource locators. Statistical studies have been performed on the sequences generated using five widely used non-cryptographic hash functions: (1) CRC, (2) Adl...

In this work, the performance of various non-cryptographic hash functions has been investigated to identify their random nature when employed in the implementation of hash tables for real-time storage and lookup of uniform resource locators. The performance analysis is performed mainly using statistical studies on the sequences generated using five...