This is a follow-up audit to Audit Report No.7, 1993-94 titled Department of Social Security: Data-matching. It reports upon the effectiveness of the DSS actions in response to the recommendations of the original 1993-94 audit. In noting the considerable progress made by the Department against the original audit recommendations, the ANAO considers that several recommendations have yet to be fully addressed. These are covered in this report and include reducing the variability in review results across offices, enhancing the TFN registration process, and validating savings assumptions.