Brian Krebs reports:
The St. Louis Federal Reserve today sent a message to the banks it serves alerting them that in late April 2015 attackers succeeded in hijacking the domain name servers for the institution. The attack redirected Web searches and queries for those seeking a variety of domains run by the government entity to a Web page set up by the attackers in an apparent bid by cybercrooks to hijack online communications of banks and other entities dealing with the regional Fed office.
Read more on KrebsOnSecurity.com. Details as to actual impact are scare at this point, but expect Brian to update as he gets more.