N.Y. Comp. Codes R. & Regs. tit. 22 § 610.6
Prior to taking custody of any money, securities (other than unindorsed securities in registered form), negotiable instruments, bullion, precious stones or other valuables, in the course of his practice as a legal consultant, for or on behalf of any client domiciled or residing in the United States, every person licensed to practice as a legal consultant shall obtain, and shall maintain in effect for the duration of such custody, an undertaking issued by a duly authorized surety company, and approved by a justice of this court, to assure the faithful and fair discharge of his duties and obligations arising from such custody. The undertaking shall be in an amount not less than the amount of any such money, or the fair market value of any such property other than money, of which the legal consultant shall have custody, except that this court may in any case in its discretion for good cause direct that such undertaking shall be in a greater or lesser amount. The undertaking or a duplicate original thereof shall be promptly filed by the legal consultant with the clerk of this court.
N.Y. Comp. Codes R. & Regs. Tit. 22 § 610.6