Former CBS investigative reporter Sharyl Attkisson alleges in her new book, "Stonewalled," that both her personal and work computers were hacked over a lengthy period of time by someone in the government.

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On "The O'Reilly Factor" tonight, Attkisson said that she received inside information from government-connected sources that she had been hacked.

She contacted a computer forensics expert, who concluded that sophisticated intrusions had taken place, and the proprietary software on her computers was a type used by either the FBI, CIA, DIA or NSA, four government agencies.

Other experts and even a consultant hired by CBS later confirmed both the extent and sophistication of the hacking.

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O'Reilly said the only way we'll ever find out who accessed her computers is if a whistleblower comes forward, but Attkisson said there have been recent developments, and there might be other ways to get to the bottom of the hacking.

"I have a whole team, basically, that's been working on this for some time that includes some of my sources, the computer forensics folks and my attorney," Attkisson explained.

Watch the clip above and be sure to pick up "Stonewalled: My Fight for Truth Against the Forces of Obstruction and Intimidation in Obama’s Washington."

UPDATE: Attkisson further discussed "Stonewalled" and the computer hacking allegations on "Hannity" Wednesday night.

She said she wouldn't even call it "hacking," instead saying it was a "long-term monitoring and surveillance of my actions using my computer, both my CBS laptop computer and my home Apple computer."

She said multiple forensics reports have confirmed the intrusions and that there were attempts to wipe her computer clean.

Attkisson revealed that, according to forensics reports, the intruders were able to access her passwords, watch her keystrokes, get into her email accounts and access the CBS corporate system.

Watch the "Hannity" interview below: