Maybe it's worth noting that to avoid Bitcoin fraud is quite simple:
Don't be fooled by easy things. Many fraudsters "accidentally" send multiple bitcoin addresses and a private key asks to send money to someone's address. It is intended that you decide to take someone's money, but actually, in the form of text files there is an executable file, and after installing it, it has access to your bitcoin wallet. So don't be greedy.
Don't follow unknown links. You can get emails naturally from some popular bitcoin services that propose you to visit their website using information from your BTC wallet. In this case, the consequences are quite predictable. Do a little research from the service that asks you personal data.
Beware of Google publicity. Con artists buy publicity through Google AdWords with references to sites that have an interface that is identical to various popular services such as Blockchain or BTC-e. If you have found some kind of publicity you must immediately notify Google of technical support.