My experience is that police agencies do crackdowns when complaints are logged to them by citizens. Knowing the escort scene in your city will most probaly keep you out of harm's way. Staying away from streetwalkers and staying away from parts of a city that have drug use or sale problems is advisable.

You need to be a bit more specific if you are referring to a specific story that you have heard. In general, anything is possible. As always the key to staying safe is to stick with well-reviewed and established providers. Also, follow your regional board to see if anyone is posting specifics regarding a local situation.