Legal Definitions - sub sigillo

Sub sigillo is a Latin phrase meaning "under the seal." In a legal and general context, it refers to information that is shared with the understanding that it must be kept in the absolute strictest confidence, without any disclosure to others. It implies a solemn and unbreakable obligation to maintain secrecy.

• Example 1: Professional Confidentiality

  A client consults with their attorney regarding a highly sensitive personal matter that could have significant legal repercussions. The client shares all the intricate details sub sigillo, trusting that the attorney is bound by professional ethics and legal privilege to keep this information completely confidential and will not disclose it to any third party.

  This example illustrates "sub sigillo" because the attorney-client relationship inherently requires the strictest confidence. The client's expectation of absolute secrecy, protected by law and professional conduct, is central to the term's meaning.

• Example 2: Whistleblower Protection

  An employee uncovers evidence of serious misconduct within their company and decides to share it with a trusted investigative journalist. The employee provides the information sub sigillo, with the explicit understanding that their identity as the source, and any details that could lead to their identification, must be protected by the journalist at all costs, even if it means resisting legal demands for disclosure.

  Here, "sub sigillo" emphasizes the journalist's commitment to absolute secrecy regarding the source's identity. The information is given under a "seal" of trust, where the primary obligation is to protect the confider.

• Example 3: Diplomatic Discussions

  During high-stakes international negotiations, two heads of state discuss highly sensitive intelligence and potential strategic alliances. They agree that the specifics of their conversation are to be held sub sigillo, meaning no details will be leaked to the press, other nations, or even their own broader diplomatic teams until a formal, public announcement is mutually agreed upon.

  This scenario demonstrates "sub sigillo" by highlighting the critical need for absolute discretion in sensitive diplomatic exchanges. The agreement to keep the discussions private ensures trust and allows for candid communication without fear of premature disclosure.