111In that regard, the duty to provide assistance laid down in Article 24 of the Staff Regulations is concerned with the protection of officials and other members of staff, by their institution, against the acts of third parties, not against acts of the institution itself, the review of which falls under other provisions of the Staff Regulations (judgments of 17 December 1981, Bellardi-Ricci and Others v Commission, 178/80, EU:C:1981:310, paragraph 23, and of 9 September 2016, De Esteban Alonso v Commission, T‑557/15 P, not published, EU:T:2016:456, paragraph 45). That being said, for the purposes of that provision, other officials or other members of staff or Members of an EU institution, such as Ms M., can be regarded as third parties (see, to that effect, judgment of 14 June 1979, V. v Commission, 18/78, EU:C:1979:154, paragraph 15).