Which of the following is NOT an exception to client confidentiality?

Client confidentiality is a fundamental principle within the legal profession, designed to protect the client's private communications with their attorney. The Model Rules of Professional Conduct outline specific exceptions to this confidentiality, but revealing information for marketing purposes is not one of them.

When considering the options, preventing serious bodily harm refers to a scenario where an attorney may disclose information to prevent imminent danger, representing a valid exception to confidentiality. Similarly, mitigating substantial financial injury can also justify a breach of confidentiality if it helps to avert significant harm to a client or others. Securing legal advice might involve discussing confidential information with other professionals when necessary for the client’s benefit, and this is also an accepted exception under certain circumstances.

In contrast, using client information for marketing purposes does not align with the ethical obligation to safeguard client confidentiality. Such a disclosure would go against the trust that clients place in their attorneys, as it prioritizes the lawyer's business interests over the ethical obligation to protect client privacy. Therefore, revealing information for marketing is clearly not an exception to confidentiality under the Model Rules, making this answer correct and highlighting the importance of maintaining confidentiality in all communications with clients.