On motion or on its own initiative, with or without notice, the court may make any order which justice requires (1) to protect the estate or any entity in respect of a trade secret or other confidential research, development, or commercial information, (2) to protect any entity against scandalous or defamatory matter contained in any paper filed in a case under the Code, or (3) to protect governmental matters that are made confidential by statute or regulation. If an order is entered under this rule without notice, any entity affected thereby may move to vacate or modify the order, and after a hearing on notice the court shall determine the motion.