Google Inc.

Chronicle LLC

Michael Wiacek

Carey S Nachenberg

William Sands Robinson

Shapor Naghibzadeh

Abu Wawda

Andrew D Hintz

The subject matter of this specification generally relates to computer security. In some implementations, a method includes maintaining a first data structure that stores arrays of identifier tuples. Each identifier tuple corresponds to a respective computer security event and includes one or more identifiers for a computing element associated with the computer security event. Each array of identifier tuples corresponds to a respective identifier and only includes identifier tuples that include the corresponding identifier. A second data structure that stores arrays of computer security data is maintained. Each array of computer security data corresponds to a respective identifier tuple stored in the first data structure and only includes computer security data associated with each identifier in the corresponding identifier tuple. A query that specifies a first identifier for a first computing element is received. Identifier tuples that each include the first identifier are obtained from the first data structure.

Efficient processing of computer security data

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for authorizing actions of a service provider. In one aspect, a method includes providing a user security key to a mobile device of a user. A request is received from a client device distinct from the mobile device to perform an action. A challenge token including a security signature matched to a service security key is generated, and the challenge token is provided to the mobile device. An approval value is received from the client device. The approval value is determined to be valid in reference to the challenge token and the user security key previously provided to the mobile device and to indicate approval to perform the action for the user. The action is performed in response to receiving the approval value.

Authorizing actions performed by an online service provider

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing contextual data aided security protection. In one aspect, a method includes automatically parsing an electronic message associated with a user that includes location information, and extracting the location information from the electronic message. The location information can be added to a database (e.g., white list) associated with the user. The location information in the database can be used to authenticate the user's request for access to electronic mail.

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Mountain View, CA, United States of America

Michael Wiacek