as far as i know tapas isn't the one who monitors ads or surveys but the ad providers (the was a place within the ads section you could find a name but i don't know who/where it is now). Like bakasama said it's best to just try to avoid surveys that ask for too much info and also be cautious if you decide to report any since a friend of mine had done so and the result was almost endless spam calls and emails.
Ideally try to trust your gut so if it seems fishy don't touch it and if your able have some kind of security app on your phone to detect spyware/malware (personally we use norton). I admit it'd be nice to have surveys that didn't put your info at risk but that's probably a lot to ask (specifically of advertisers whose main game is data collection).