The Anti-Phishing Working Group (
www.antiphishing.org) is launching a Bitcoin and Cryptocurrency Working Group to help exchanges, wallets and investment funds protect users against phishing.
Companies can submit phishing attacks and malicious domains to the Working Group eCrime Exchange. This gets incorporated into the blacklists of 70+ security company products and major web browsers within minutes, preventing users from receiving phishing emails and blocking them in their browsers. It also goes to takedown services who can get those fraudulent sites taken down and potentially prevent new sites from coming up.
APWG has been researching bitcoin and cryptocurrency fraud since 2011 and holds sessions at their eCrime conferences on this topic.
If you are an exchange, or use one, check out the effort:
https://www.apwg.org/cryptocurrency/