Speyside wrote:Pretty sure that violates the legal cannon of ethics.
There are exceptions to what privilege will protect. Communications made with the intent of committing or concealing a crime or fraud are exempted.
Cohen is entitled to disclose conversations with Trump that are directly related to charges he might face.
"The ethics rules allow lawyers to disclose client confidences from a representation if the lawyer is charged with wrongdoing arising out of the representation," said New York University law professor Stephen Gillers. "You can't trade on client information unless you're charged with wrongdoing because of the representation of that client."
Excerpts from
https://www.politico.com/story/2018/04/24/cohen-trump-attorney-legal-minefield-546336