Watch out for phishing sites. Many people got scammed like that. Don't be lazy and check everything.
Everyday we can see examples of scammers creativity.
We never have to share private key to anyone,why they need private keys?
Some bounties are also asking for private keys so be aware of them they are all the scammers.
It is better bookmark the MEW site and login from that bookmark will save us from fake websites.
The major problem with the people is they don't learn anything before sending or giving details to others. It is always good to check the details before sharing anything with the person who doesn't know us. These major problem with the people are here to make money not for loosing, in hurry mode they will not check the details correctly and start sharing their private keys.