Identify the professional Johnson approached for legal advice before conducting an investigation.

The professional that Johnson approached for legal advice before conducting an investigation is an attorney. Attorneys have the expertise and knowledge of the law that is crucial in guiding investigators on legal matters, including compliance with laws and regulations, the admissibility of evidence, and the potential legal implications of the investigation's findings.

In digital forensics and investigations, involving an attorney early in the process ensures that the investigation is conducted within legal boundaries, protecting both the investigator and the organization from potential legal repercussions. Attorneys can also advise on how to handle sensitive information and ensure that the rights of individuals, such as privacy concerns, are respected throughout the investigation.

While other professionals, such as a criminal psychologist, senior investigator, or technology consultant, provide valuable insights within their respective fields, only an attorney is equipped to offer the specific legal counsel necessary for navigating the legal complexities associated with investigations. This is why seeking legal advice from an attorney is a standard practice in formal investigations.