The way these became bullet points on the slide is ~ An active investigation leads an agent to a suspect known to have used one of these applications An admin

The way these became bullet points on the slide is ~ An active investigation leads an agent to a suspect known to have used one of these applications An administrative subpoena is issued to the company asking for what information is available The company is then ordered by a federal judge to provide information related to a particular account or accounts The company complies. This is why it is important to understand how your messaging service handles data and how you can compromise your own safekeeping of all or part of that data.