Mew is safe, no one get access to your account except you are careless about your private keys or keystore
No matter the wallet, the moment you are compromised, there is nothing the wallet provider can do. When its now becoming embarrassing due to the number of people involved then they can now act on it on whether its their own system that has been compromised.
MyEtherWallet.com is one of the safest ETH site I know and its because of its flexibility in which everything you need for on the site including the private key is something that is made available without unnecessary stress.