Fourteen men were indicted in an investigation involving 251 victims.
Legislators anticipate the device's more disastrous effects.
The targets of the investigation may have simply purchased the wrong book.
A DHS spokesperson said Homeland Security didn't take down the patriotic hacker's website.
The department says warrantless searches of electronic devices are essential, despite protests from Fourth Amendment advocates.
Dwolla payments to and from Mt. Gox, the world's largest Bitcoin exchange, are on hold.