However, Tim Bell, a London public-relations guru and longtime friend of Mr. Berezovsky, said it is highly unlikely Mr. Berezovsky would have sent such a letter.

WSJ: Boris Berezovsky, Exiled Russian Tycoon, Dies

While so far no one has either taken responsibility for Stuxnet or been exposed as its developer, experts who have studied the program agree that its sophistication is so vast that it is highly unlikely a group of privately financed hackers developed it.

CENTERFORSECURITYPOLICY: The strategic lessons of Stuxnet

While it is possible Tommy told the truth back then and is lying now, such a scenario seems highly unlikely. (Why would Tommy start telling self-implicating lies after previously telling the truth?) More probably, Tommy was able to fool the polygraph.

CNN: Moxley Case: Excerpts from the Sutton Report