Digital forensics is going to have to take place. We are going to have to get those computers analyzed by digital forensics experts. Those are the people who are going to be able to see or say what was happening on the computer at certain dates and times. We will try to match the activity of the computer with the activity of the offender, and by doing so, that's how we can identify who's behind the keyboard.
The electronic service provider will collect the username, the IP address and pieces of information within the profile. That's what, sometimes, on more complex cases, may lead us to identify the same user utilizing different profiles because they can do that too. My colleagues who are also witnesses today are speaking of complex investigations. More often than not, we're looking at—never mind one offender—usually multiple profiles being used, and then we have to reconcile those different identities, online identities, to an actual, real one.