How do you play piano with both hands?

“I’ve never really been asked to do just one thing that you can’t do,” she says.

“I’ve never been asked to play piano with two hands.”

So you’re practicing with both your hands?

“I would have to say yes on both counts,” she says.

The U.S. Department of Justice said on Tuesday it will open a probe into whether U.S. authorities covered up the extent of their ties with Russia by using an obscure computer code, known as a zero day, to identify hackers.

The code, known to intelligence officials as a zero-day, affects the way in which software works. When targeted by cyber attackers, a zero-day might allow a computer to take over the system by bypassing the security protections normally in place, which would make the computer accessible to other hackers.

Officials in the Department of Justice and the Office of the Director of National Intelligence have been trying to develop a strategy to prevent hackers with these zero-days stealing information about civilian and military computer systems.

But the use of a zero-day code, officials said, is not one of those tools and a probe by the Office of the Inspector General, as first reported by The New York Times, would not lead to any investigation of the government by Congress.

“I’m not aware of any investigation or inquiry by the OIG into these matters,” Department of Justice spokesman Brian Fallon said.

Officials declined to comment on the code’s existence or how the probe was begun, saying it would “defund” the OIG. An inspector general’s office probe “does not create a precedent or create a new federal crime,” Fallon said.

One official familiar with the investigation said the OIG was in contact with U.S. military and intelligence officials who could give the OIG specific details of the code that could help investigators. In addition, the official said the official was confident that “this investigation was a non-criminal matter.”

But the code did not appear to have been used to target civilian systems in the U.S., officials said.

“The FBI, as part of our response to Russian intrusions, has used a variety of techniques during our counterintelligence efforts to make this process harder and potentially impossible,” Fallon said in a statement. “These include zero-day intrusion techniques and other techniques that we will continue to use in the counterintelligence mission.”

The FBI declined to comment.