In law, malpractice is a type of negligence in which the misfeasance, malfeasance or nonfeasance of a professional, uner a duty to act, fails to follow generally accepted professional standards, and that breach of duty is the proximate cause of injury to a plaintiff who suffers damages. It is committed by a professional or her/his subordinates or agents on behalf of a client or patient that causes damages to the client or patient. Perhaps the most publicized forms are medical malpractice and legal malpractice by medical practitioners and lawyers respectively, though malpractice suits against accountants (Arthur Andersen) and investment advisors (Merrill Lynch) have featured in the news more recently.