Like any get-rich-quick scheme, bitcoin scams thrive on the gullibility of its victims. Just because it's a digital currency doesn't mean you can acquire wealth quickly.
The best way is just to use your brain. There are scammers everywhere and if it looks to good to be true, it usually is. Be sure to check your web addresses twice or three times before you log in and most importantly, get yourself a hard wallet, especially if you have bigger amounts of coins in your wallet.