The fraud, in which Satyam's founder revealed he had overstated the company's cash balance by $1 billion, left Satyam struggling for survival. In April 2009, Tech Mahindra Ltd won an auction for a controlling stake in the troubled company. PricewaterhouseCoopers said in January 2009 that all Satyam audit reports from 2000 through 2008 should no longer relied upon.