The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Mar. 25, 2005
Idan Avraham, Seattle, WA (US);
Kenneth D. Ray, Seattle, WA (US);
Mark Williams, Kirkland, WA (US);
David R. Wooten, Redmond, WA (US);
Idan Avraham, Seattle, WA (US);
Kenneth D. Ray, Seattle, WA (US);
Mark Williams, Kirkland, WA (US);
David R. Wooten, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Protecting computer systems from attacks that attempt to change USB topology and for ensuring that the system's information regarding USB topology is accurate is disclosed. A software model is defined that, together with secure USB hardware, provides an ability to define policies using which USB traffic can be properly monitored and controlled. The implemented policy provides control over USB commands through a combination of software evaluation and hardware programming. Legitimate commands are evaluated and 'allowed' to be sent to a USB device by a host controller. Illegitimate commands are evaluated and blocked. Additionally, the USB topology is audited to verify that the system's topology map matches the actual USB topology.