When my Behavior Enhances my Smartphone Security

Smartphones have become ubiquitous in everyday life, storing and generating a huge amount of sensitive personal data which makes them vulnerable to increasing security and privacy threats. While protecting smartphones has become a necessity, existing traditional authentication methods, which are mainly based on the use of PIN codes and passwords, are facing remarkable drawbacks. Behavioural biometricsbased authentication is an interesting alternative to ensure a better protection and a better usability. This paper presents a transparent behavioural authentication solution using smartphone calling habits data. tested on a dataset of 93 users with more than 16.000 samples and shows promising results while guarantying a high privacy protection.