The computer code former Goldman Sachs Group programmer Sergey Aleynikov is accused of stealing can be found on the Internet, an expert witness testified as the defense began its case in Aleynikov’s trial.

Aleynikov was arrested in July 2009 and indicted Feb. 11, 2010, for stealing high-frequency trading code software from the firm.

His lawyer, Kevin Marino, argues his client broke a confidentiality rule of the company and didn’t commit a crime. Aleynikov denies any criminal wrongdoing.