The OCC, Board, FDIC, and OTS (the Agencies) are publishing an interpretation of the Gramm-Leach-Bliley Act (GLBA) and the Interagency Guidelines Establishing Information Security Standards (Security Guidelines).\1\ This interpretive guidance, titled "Interagency Guidance on Response Programs for Unauthorized Access to Customer Information and Customer Notice" (final Guidance), is being published as a supplement to the Security Guidelines in the Code of Federal Regulations in order to make the interpretation more accessible to financial institutions and to the general public. The final Guidance will clarify the responsibilities of financial institutions under applicable Federal law. OTS is also making a conforming, technical change to its Security Procedures Rule. ---------------------------------------------------------------------------