My Ether Wallet, Metamask, EtherDelta

I had set up a wallet with My Ether Wallet some months ago and had a token and a little ETH in it.

Then I heard about Metamask and linked MEW to MM.

Then I heard about EtherDelta and linked MM to ED.

I sent some ETH to my wallet, which I used to place orders for tokens on ED. I came back later and found that my ETH had disappeared. I couldn’t figure it out at the time and didn’t give it a second thought. Next day I transferred some more ETH to my MM wallet because I wanted to transfer the tokens from ED. I also transferred some ETH to ED to place more orders. I came back later and found the balance ETH in my MM wallet had gone. I also noticed that one lot of tokens I had transferred to MM had also gone.

I looked into it further and found that they went to this address:
0xff714f17Dcf5d9dB0cc3b814E415ACE61f6Cdb09

I went to Etherscan and found that this address contained over 230 ETH. I looked at the comments tab and found a whole load of irate people’s comments about how their tokens and ETH were stolen.

Yesterday, I transferred everything I had in ED to my MM wallet. I saw that they were safely in MM the wallet when I looked in MEW. Unfortunately, to my horror this evening, I find that they have all been stolen shortly after I made the transfers. I’m absolutely flabbergasted. I don’t know how it has happened. They’ve all been taken out from my MEW wallet into the above wallet.

All I have now in my MEW wallet, which I can see in MM, is just one lot of tokens.

I don’t know what is safe anymore!

Does anyone have an experience like this?