Andrew Fastow was one of the major figures behind the complex web of off-balance-sheet special purpose entities used to conceal their massive losses. In 2004, he pled guilty to two counts of securities fraud and was sentenced to six years in federal prison. He completed his sentence in 2011. Fastow now provides litigation support at a law firm and consults with directors, attorneys, and hedge funds on how best to identify potentially critical financial, accounting, compensation, and cultural issues. He is also a Principal and Investor of KeenCorp, an artificial intelligence software company based in Rotterdam.