Amongst other things, this affair shows an appalling lack of ethics in the programming and IT world. Dozens if not hundreds of people must have known what was going on, and yet not a single one had the guts to blow a whistle at the time or has had the guts to do so since. Maybe it's too much to expect in an occupation (the word "profession" is not appropriate) which uses and defends tax evasion so stridently.