One nightmare shared by all lawyers is the prospect of a letter from the Standing Committee on Lawyer Discipline informing them of a complaint. Prudent lawyers avoid this by becoming familiar with the ethical rules and standards of their jurisdiction. Because, as many a lawyer has learned, ignorance of the rules is no excuse.
Joyce Manna Janto, Avoiding Ethics Complaints: Finding the Rules and LEOs, VA. LAW., Dec. 2018, at 56.