N.Y.C. Charter § 1122: Section 1122. Bonds.

Unless otherwise provided by law, each officer of the city who has possession of or control over any funds of the city shall give bond for the faithful performance of the duties of such officer in such sum as may be fixed and with sureties to be approved by the comptroller. Such bonds shall run to the city of New York, and in case there is another officer who is responsible for the officer giving the bond, shall run also to such officer.