URL reputation system

US8229930B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Jason Cohen · SeaTac, US
• Benjamin Arai · San Jose, US
• Craig Boucher · Bellevue, US
• Nicholas R. Waggoner · Newcastle, US
• Jose Marcos de Oliveira · Redmond, US
• Yun Lin · Kirkland, US

Key dates

• Filing date: Feb 1, 2010
• Grant date: Jul 24, 2012
• Expiry date: Oct 10, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q30/02
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A URL reputation system may have a reputation server and a client device with a cache of reputation information. A URL reputation query from the client to the server may return reputation data along with probabilistic set membership information for several variants of the requested URL. The client may use the probabilistic set membership information to determine if the reputation server has additional information for another related URL as well as whether the classifications are inheritable from one of the variants. If the probabilistic set membership determines that the reputation server may have additional information, a query may be made to the reputation server, otherwise the reputation may be inferred from the data stored in the cache.