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PLEASE JOIN US FOR THE NEXT INSTALLMENT IN THE BLACK HAT WEBCAST SERIES

Abusing Wi-Fi Beacons and Detecting & Preventing Attacks

Thursday, September 17, 2020

11:00AM - 12:00PM PDT // 60 MINUTES, INCLUDING Q&A

Sponsored By:

DomainTools

All Wi-Fi networks periodically broadcast beacons to announce their presence. These beacons are not authenticated and can be spoofed by an adversary, but it's unclear what risks this poses in practice.

In this webcast, we discuss what kinds of attacks are possible by spoofing Wi-Fi beacons. For example, we show how an adversary can reduce the throughput of nearby devices, lower the transmission power of clients, and we show how spoofing beacons can facilitate advanced man-in-the-middle attacks.

In the second part of the webcast, we describe a scheme to protect Wi-Fi beacons. This scheme has been standardized as part of the (draft) IEEE 802.11 standard. We give a high-level explanation of our scheme, and we give a demo of its implementation in Linux.

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Webcast Presenters

Mathy Vanhoef

Mathy Vanhoef is a postdoctoral researcher at New York University Abu Dhabi. He is most well-known for his KRACK attack against WPA2, and the RC4 NOMORE attack against RC4. His research interest is in computer security with a focus on network security, wireless security (e.g. Wi-Fi), network protocols, and applied cryptography.

Sponsor Presenter: Chad Anderson

Chad Anderson is a Senior Security Researcher at DomainTools. His background is in security-focused operations and automation that he now applies to building, curating and exploring new data sets for security researchers. He has a particular interest in automation, network security and their intersection. His primary focus leans heavily on leveraging open source technologies to improve deployments, network security and systems administration at DomainTools.

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