Which of the following scenarios best exemplifies a private investigator breaching the client's privacy under the Personal Information Protection and Electronic Documents Act (PIPEDA)?

1. Sharing details of a client's sensitive divorce case with a colleague over lunch without the client's consent.
2. Collecting publicly available information about a subject's social media activity for a legitimate investigation.
3. Disclosing investigative findings to law enforcement after receiving a valid court order.
4. Discussing a client's case with the client's authorized legal representative.