In the criminal case against Dewey & LeBoeuf’s former leaders, the office of Manhattan District Attorney Cyrus Vance Jr. is seeking an order to prohibit all parties from unnecessarily disclosing witness names or other identifiable information to third parties.

In a letter filed Friday in advance of a pretrial conference scheduled for Monday before Justice Robert Stolz, the D.A. said defense counsel for the four Dewey defendants have approved the motion for the protective order.