N.Y. Civil Practice Law & Rules § 2505 (2026)

§ 2505. Filing of undertaking; service upon adverse party; time when
effective. An undertaking together with any affidavit required by this
article shall be filed with the clerk of the court in which the action
is triable, or, upon an appeal, in the office where the judgment or
order of the court of original instance is entered, and a copy shall be
served upon the adverse party. The undertaking is effective when so
served and filed.