I have not had a problem with MEW. But I've heard complaints from most people. All tokens in your wallets are stolen. This is a huge problem ,I'm still using it,I did not investigate another option.but now I'm starting to think. I hope no one is affected any more.Keeping your private key private is so important to be careful
Until your private key are in safe place your mew account will never be hack and your altcoin inside them are safe & cannot stolen by anyone, mew is one of the popular eth based wallet and untill now Im using this wallet to hold my altcoin, if you are using this wallet you need to understand how this wallet work.