Via Brendan Sasso of The Hill, the Federal Reserve has confirmed their site was recently breached:

“The Federal Reserve System is aware that information was obtained by exploiting a temporary vulnerability in a website vendor product. The exposure was fixed shortly after discovery and is no longer an issue,” the spokesman said in an emailed statement on Wednesday.

Earlier in the week, Internet “activists” boasted about the hack on Twitter. Among their findings, they claimed, were passwords for 4,000 bank employees.