EtherDelta Hacked, what to do?

"Do not use the site until confirmed safe!"
Wait for confirmation here: https://twitter.com/etherdelta
"If you exposed your private key move your funds & tokens!"
"Even MetaMask users are at risk!"
"Only hardware wallets are safe!"

How to stop this type of attack affecting you?

Simple, get a Nano S hardware wallet!
Only buy the Nano S directly from the manufacturer.
https://www.ledgerwallet.com/r/895b?path=/products/ledger-nano-s

The Nano S is even safe against other attacks such as viruses, malware, and key-loggers.
You can even safely use the Nano S on infected computers.

What to do if you exposed your private key?

Create a new ETH wallet.
Use MyEtherWallet to move your funds & tokens to the new wallet.

How to move funds out of EtherDelta without opening the hacked website?

Safely check your balance on EtherDelta here: https://deltabalances.github.io/

Also note that you have to use the full decimal values on the token and ETH.
So 1 ETH becomes a value of 1e18 or 1000000000000000000
Other resources to help with the raw uint256 value;
https://medium.com/@CryptoAtelier/etherdelta-dont-leave-crypto-on-the-table-c76419c52908
https://github.com/numerai/contract/wiki/MyEtherWallet-Stake-Tutorial

What if you used a hardware wallet?

You are safe and the hackers do not have your private keys, so no need to panic.