If you use a Parity multi Sig wallet. Please go NOW and read this https://blog.parity.io/security-alert-high-2/ and move your funds immediately .
There are reports now that over 153,000 ETH have been stolen already. Here is address:
https://etherscan.io/address/0xb3764761e297d6f121e79c32a65829cd1ddb4d32#internaltx
This is breaking news.. Will update when more news available