Google Inc.

Algis Pranas Rudys

Matthew T Harren

Joanne Syben

Matthew Thomas Harren

A method of deleting log records may include identifying a plurality of log records generated during a time period, for each identified log record, determining whether a delete request associated with the log record has been made, and, in response to determining that a delete request has not been received, identifying a unique identifier associated with the log record, searching a user activity table for an entry having a key table index associated with the unique identifier, where the entry is associated with a timestamp, using the key table index and the timestamp to identify a key associated with the unique identifier and the timestamp from a key table, encrypting at least a portion of the log record with the identified key to generate an encrypted value, and storing the encrypted value as an entry in the log record database that is associated with the identified log record.

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Zurich, Switzerland

Algis Pranas Rudys