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On how VoIP attacks foster the malicious call ecosystem

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2022cose-voip.pdf (3.453Mb)
Identifiers
URI: http://hdl.handle.net/20.500.12761/1589
DOI: 10.1016/j.cose.2022.102758
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Author(s)
Carrillo-Modejar, Javier; Martinez, Jose Luis; Suarez-Tangil, Guillermo
Date
2022
Abstract
Switched telephone networks are a key and ubiquitous infrastructure. Recent technological advances have integrated modern and inexpensive systems into these networks in order to use the Internet to place calls via Voice over IP (VoIP). The evolution of this technology has also led to an increase in the number and sophistication of the techniques used by criminals to commit fraud. Specifically, with the emergence of VoIP, attackers can now adapt tools commonly used by cybercriminals, such as botnets, to make their attacks more complex and insidious. For example, through bots they can dial multiple numbers automatically, enabling them to target a greater number of victims, and do so more quickly. While recent studies have shed light on how certain parts of this ecosystem work, it is still unclear how attacks on VoIP systems contribute to this type of fraud. This paper presents a novel VoIP honeypot that captures voice interactions, in addition to employing low-level telemetry. With the study of how attackers obtain access to our honeypot and the actions they perform, we present an overview of the most prevalent types of fraud used in this ecosystem, including unique insights into the origin of the attacks and the destination of calls made through our architecture. Finally, we analyze in-depth the actions taken to study the different types of telephony fraud.
Share
Files
2022cose-voip.pdf (3.453Mb)
Identifiers
URI: http://hdl.handle.net/20.500.12761/1589
DOI: 10.1016/j.cose.2022.102758
Metadata
Show full item record

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