Computer expert Dennis Montgomery tricked the US government into paying £13m for software he claimed could stop terrorist attacks.
He even managed to persuade former President George Bush to divert a series of flights from London away from the US after convincing him they were hijacked.
The elaborate cons were hushed up until now to cover up the fact that top US officials had been fooled by them, according to reports.
Montgomery proved that pseudo computer science can baffle the best of brains, although Dowtime allows that Bush may be the exception, is awaiting trial in Nevada.
The charges, however, do no relate to his grand deception and the £13m of ill-gotten gains, but are instead for allegedly passing £1m of bad cheques to cover up gambling debts, which proves that expertise in computers does not necessarily guarantee common sense in an individual.