These scammers are constantly learning, becoming smarter and more sophisticated. Be careful always. Download only from official sites and always check where the link leads you are going to go.
Well, we can not stop it, even the best antivirus programs can not cope, it's all due to a lot of money in the crypto currency and people holding crypto currency, it's all clear. Have to adapt only
The problem is that you just cannot read the source code of every single thing you put on your day to day desktop PC.
Most crypto users do not have a seperate machine for crypto.
In the future a secondary machine will be like 2 FA today, that's my guess.
I have already promised myself that in the new year 2018 I will buy a separate apple in order to send transactions and other items such as wallets and additional programs that will not interfere with the operation of the system.