Between Dec 19, 2024 and Jan 2, 2025, datasets can be submitted to DRUM but will not be processed until after the break. Staff will not be available to answer email during this period, and will not be able to provide DOIs until after Jan 2. If you are in need of a DOI during this period, consider Dryad or OpenICPSR. Submission responses to the UDC may also be delayed during this time.
 

Towards improving security on the wireless medium

Loading...
Thumbnail Image

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

Towards improving security on the wireless medium

Published Date

2012-08

Publisher

Type

Thesis or Dissertation

Abstract

This thesis investigates security issues in the wireless medium surrounding many of today’s modern devices. Such devices that have analog sensors measuring physical processes also have circuits to amplify the signal before it gets converted into a digital format for processing and communication. Those analog input circuits by their use of low voltage signals are sensitive to electromagnetic interferences (EMI). This work investigates the use of EMI as a method of signal injection into the device. The analog inputs are typically not checked for forged waveforms and can be manipulated wirelessly by an attacker. The fundamental vulnerability of those circuits is explored and bounds are derived for the attack. Solutions are proposed for classes of devices depending on their individual constraints. The next part of this work looks at a subset of wireless communication protocols used by devices, focusing on integrated clinical environments. A corresponding list of security requirements is proposed and used to evaluate currently available standards, revealing large gaps. This section concludes by proposing a direction on composing secure integrated clinical environments based on the requirement list. On a larger scale, this thesis analyzes wireless cellular GSM networks. It first reveals location information leaks on the air interface due to the broadcast methods used to notify phones in a given geographic area that there is an incoming call. This section also proposes solutions to mitigate the information leaks discovered. This work then looks at the difficulty of properly and fairly accounting for bytes transferred on behalf of the application layer. A tradeo↵ point used by current transport layers based on wired networks is guaranteed delivery with increased overhead. This section investigates methods that could exploit transport layer retransmission mechanisms to exhaust the financial resources of a cellular user. This thesis focuses heavily on understanding the attacker and methods to wirelessly exploit vulnerabilities in systems. This is a necessary step in building better future systems and evaluating current systems.

Description

University of Minnesota Ph.D. dissertation. August 2012. Major: Computer Science. Advisor: Yongdae Kim. 1 computer file (PDF); x, 145 pages.

Related to

Replaces

License

Collections

Series/Report Number

Funding information

Isbn identifier

Doi identifier

Previously Published Citation

Other identifiers

Suggested citation

Foo Kune, Denis. (2012). Towards improving security on the wireless medium. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/142307.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.