Couple of DNS servers were hijacked to resolve
http://myetherwallet.com users to be redirected to a phishing site. This is not on @myetherwallet side, we are in the process of verifying which servers to get it resolved asap.
I think MyEtherWallet has a pretty good level of security, the most important thing to keep our wallet always safe is to always keep the privacy of the wallet, never give it to anyone, and always be careful of all the sites we open.