Competent authorities receiving confidential information under Article 53 shall use it only in the course of their duties and only for any of the following purposes:

(a) to check that the conditions governing access to the activity of credit institutions are met and to facilitate monitoring, on a non-consolidated or consolidated basis, of the conduct of such activity, especially with regard to the monitoring of liquidity, solvency, large exposures, and administrative and accounting procedures and internal control mechanisms;

(b) to impose penalties;

(c) in an appeal against a decision of the competent authority including court proceedings pursuant to Article 72;

(d) in court proceedings initiated pursuant to special provisions provided for in Union law adopted in the field of credit institutions.