No it is not actually controlled by the hackers the reason why some people can easily get or access your account because your private key is not secured properly. The first thing you should do in creating your ether wallet is make sure that you are the only one who knows your private key because it is the very important thing in your ether wallet account . Second there are some sites that are pretending that you just need to copy and paste you wallet address to give you and transfer free tokens or what so ever in your account there are programs created by the hackers that when you paste your wallet address it will replace the address that you copied and they will easily get your master pass for you password manager. Beware of those sites to prevent your wallet to be hacked. And the last thing you should do you is to create another wallet because the hacker has the power to control your wallet because the hackers have your private key. Hope that this tips will help to you to have idea how to keep properly your ether wallet. Thank you!