Ideally, your company will have a crisis strategy ahead of time, but if not, gather a team together to handle things and ensure all communications align. Deliver those communications and make sure they are heard loud and clear by any wronged parties. Listen to the feedback you receive and keep monitoring the situation. In short, make sure you do respond (and don’t just hide behind ‘no comment’) but be thoughtful and planned in your response (and not speaking from panic or other emotions).