New Jersey Rule of Professional Conduct 1.6
(a) A lawyer shall not reveal information relating to representation of a client unless the client consents after consultation, except for disclosures that are impliedly authorized in order to carry out the representation, and except as stated in paragraphs (b), (c), and (d).
(b) A lawyer shall reveal such information to the proper authorities, as soon as, and to the extent the lawyer reasonably believes necessary, to prevent the client or another person:
(1) from committing a criminal, illegal or fraudulent act that the lawyer reasonably believes is likely to result in death or substantial bodily harm or substantial injury to the financial interest or property of another;
(2) from committing a criminal, illegal or fraudulent act that the lawyer reasonably believes is likely to perpetrate a fraud upon a tribunal.
(c) If a lawyer reveals information pursuant to RPC 1.6(b), the lawyer also may reveal the information to the person threatened to the extent the lawyer reasonably believes is necessary to protect that person from death, substantial bodily harm, substantial financial injury, or substantial property loss.
(d) A lawyer may reveal such information to the extent the lawyer reasonably believes necessary:
(1) to rectify the consequences of a client's criminal, illegal or fraudulent act in the furtherance of which the lawyer's services had been used;
(2) to establish a claim or defense on behalf of the lawyer in a controversy between the lawyer and the client, or to establish a defense to a criminal charge, civil claim or disciplinary complaint against the lawyer based upon the conduct in which the client was involved; or
(3) to prevent the client from causing death or substantial bodily harm to himself or herself; or
(4) to comply with other law.
(e) Reasonable belief for purposes of RPC 1.6 is the belief or conclusion of a reasonable lawyer that is based upon information that has some foundation in fact and constitutes prima facie evidence of the matters referred to in subsections (b), (c), or (d).