NEVER CHANGE YOUR API KEY
Or you won't be able to use CAT.
I know there's a problem on poloniex. Hope they'll be able to solve.
Your API Key should not have the withdraw option activated, so no risk for you.
Hi, Sampey
After the recent
#Cloudbleed 
discovery users of most cryptoexchanges are strongly advised to change their passwords, 2FA and APIs

But after that we won't be able to use C.A.T.!
So what would you propose to solve this problem?