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Publications (3)
Fraud in mobile telecommunications is a complex and dynamic problem for Telecom operators. These companies have developed
and are exploring new ways of making the fraud detection process more efficient. Most of these attempts are based in fraud
management systems, capable of detecting fraudulent communications. In this paper, we present a case-base...
In this paper we tackle the problem of superimposed fraud detection in telecommunication systems. We propose two anomaly detection methods based on the concept of signatures. The first method relies on a signature deviation-based approach while the second on a dynamic clustering analysis. Experiments carried out with real data, voice call records f...
1 — Telecommunications fraud is a problem that affects all operators and is an important factor in their annual revenue losses. Aside from financial impact, it also constrains new service deployment and may contribute to adverse costumer perception and, consequently, churn increase. This paper generically presents the most relevant types of fraud i...