 Often a police officer may stumble upon one of these pages, or an informant can give access to the local gang page.Alternatively, they will have to formally request the needed information.Most service providers have four basic types of information about their users that may be relevant to a criminal investigation; 1) basic identity/subscriber information supplied by the user in creating the account; 2) IP log-in information; 3) files stored in a user's profile (such as "about me" information or lists of friends); and 4) user sent and received message content.