How Criminals Get Caught

Criminals get caught because they get tracked down by their IP address.
They constantly brag about what they are doing and how much they are making.
They commit criminal acts for others and when the other party gets caught they name the criminal.
Criminals get caught by committing other criminal acts and exposing the rest.
Fingerprints/footprints on paper or other objects on the site.
They turn themselves in.
There are witnesses to their crimes.
They slip up when being interrogated and get caught in a lie.