This document identifies and describes 14 major repositories of data breach information. It finds that while no single comprehensive source exists, the main repositories include Attrition.org, CERT, Databreaches.net, DataLossDB, Identity Theft Resource Centre, InfosecurityAnalysis.com, MyID.com, NAID, PHI Privacy, PogoWasRight.org, Privacy Rights Clearinghouse, US-CERT, US Securities and Exchange Commission, and Verizon. The document evaluates Privacy Rights Clearinghouse, Identity Theft Resource Centre, and DatalossDB.org as being relatively open, detailed repositories of breach data.