The right to confidentiality of agency records and files on the recipient. Nothing in this subsection shall prohibit the use of such records for auditing or accounting purposes or, to the extent permitted under federal law, for the purposes of locating persons, or the assets of persons, who have failed to file tax returns, who have underreported their taxable income or who are delinquent taxpayers, identifying fraudulent tax returns or providing information for tax-related prosecutions.