The antonyms for the phrase "are divulged" could be "are concealed" or "are withheld." When something is divulged, it means that information is being revealed or made public. Therefore, the opposite could be that the information is kept hidden or secret, and not made known to others. In some cases, this may be necessary to protect sensitive information or ensure privacy. It is important to remember that when dealing with confidential information, it is our responsibility to maintain the trust of those who provide it to us and only disclose it when it is necessary and proper to do so.