LPL Financial Corporation notified the New Hampshire Attorney General on August 25, 2010, regarding a security breach involving the loss of an unencrypted portable drive in the mail on August 18, 2010. The drive contained client personal information, including names, addresses, financial account details, Social Security numbers, and dates of birth. The incident affected a limited number of individuals, including one New Hampshire resident. LPL investigated and notified the affected client.