GUERAR M.

We are witnessing a growing demand for ATM authentication solutions that overcome the limitations of the de facto standard mechanism based on magnetic card and numeric PIN, that has revealed to be weak against ATM-specific attacks (e.g., skimming and recording attacks). An emerging trend is relying on smartphones as a carrier for...

Pattern lock is a very popular mechanism to secure authenticated access to mobile terminals; this is mainly due to its ease of use and the fact that muscle memory endows it with an extreme memorability. Nonetheless, pattern lock is also very vulnerable to smudge and side channels attacks, thus its actual level of security has been often...

Smartwatches offer new capabilities to develop sophisticated applications that make daily life easier and more convenient for consumers and are becoming increasingly ubiquitous. The kind of services these devices are capable to provide include applications for mobile payment, ticketing, identification, access control, etc. While this makes...

The market for invoice inancing has been steadily growing in the last few years and has been the third inancing market in size in 2016. Most solutions in this ield are based on private platforms and even the new proposals based on blockchain are mostly adopting a private, permissioned blockchain. In this paper, we propose an idea based on a...

The purpose of this work is to leverage two types of sensors, motion and optical, to create a continuous authentication system for smart devices such as smartwatches. The proposed solution is based on an Android application that uses the accelerometer and gyroscope to measure movements and to classify them in normal and session-endangering...

Our growing reliance on the digital world has caused a similar growth in the sophistication of bots trying to impersonate humans. The most classic tool to tell human and computers apart is the CAPTCHA, however CAPTCHAs based on cognitive challenges are becoming either insecure or very difficult to be solved by humans too. A possible solution is...

Cellular networks are fundamental infrastructures nowadays, so that any communication problem could affect the user in different ways, from accessing social networks up to personal safety issues. In this work, we explore the feasibility of carrying out a DDoS attack to the Home Subscriber Server of the 4G network through non-3GPP access, i.e....

A recent study has found that malicious bots generated nearly a quarter of overall website traffic in 2019 [102]. These malicious bots perform activities such as price and content scraping, account creation and takeover, credit card fraud, denial of service, and so on. Thus, they represent a serious threat to all businesses in general, but are...

Smartwatches are becoming increasingly ubiquitous as they offer new capabilities to develop sophisticated applications that make daily life easier and more convenient for consumers. The services provided include applications for mobile payment, ticketing, identification, access control, etc. While this makes modern smartwatches very powerful...