ISSN : 1796-2056
Volume : 1    Issue : 6    Date : November/December 2006

Threats and Countermeasures in GSM Networks
Valer Bocan and Vladimir Cretu
Page(s): 18-27
Full Text:
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Mobile networks not only provide great benefits to their users but they also introduce inherent
security issues. With respect to security, the emerging risks of denial of service (DOS) attacks will
evolve into a critical danger as the availability of mobile networks becomes more and more
important for the modern information society. This paper outlines a critical flaw in GSM networks
which opens the avenue for distributed denial of service attacks. We propose a way to mitigate the
attacks by adding minimal authentication to the GSM channel assignment protocol.

Index Terms
security, denial of service, attack, wireless networks, GSM, GPRS, 2G, DREAD