Do you remember that really hot chick who tried to friend you on Facebook? The one who claimed to be single and horny? There’s a good chance that “she” was a cop:
Investigators know this, which is why the accounts continue to flourish.
This should come as a surprise to approximately nobody. Law enforcers have been busy turning this country into a surveillance state. Meanwhile, Facebook has been busy collecting every shred of personal information about as many people as it can. They’re a match made in Heaven, or more aptly Hell.
The best defense against this, other than not using Facebook, is to only add people whose identity you have personally verified. That doesn’t necessarily mean that a person you know in real life isn’t an undercover cop, but verifying identities will at least cut down on the low level efforts to surveil you.