Non-disclosure of tax informant details: secrecy preserved, department may use information and only limited feedback provided. Non-disclosure obligations preserve informant identity and confidentiality while allowing the Income Tax Department to use the information for appropriate purposes. Informants have no right to detailed feedback about actions or outcomes, but may be told whether their information was acted upon and whether they may receive a reward. Directorates General of Income Tax (Investigation), exempt under Section 24 of the Right to Information Act read with the Second Schedule, are not bound to disclose action taken or outcomes except as provided in that Act.