Former SocGen trader Samarth Agrawal has been sentenced to three years in jail for stealing the bank's high frequency trading code.
Agrawal was found guilty by a jury in a trial in Manhattan in November after admitting the wrongdoing during testimony.
He had been arrested by the FBI in April as he was about to start a new job with rival HFT shop Tower Research Capital, accused of copying reams of proprietary code into Microsoft Word documents and printing off hundreds of pages of data and source code.
US District Judge Jed Rakoff sentenced Agrawal to three years - less than called for under federal guidelines - and two years of supervise release. The judge also warned that upon release Agrawal could be deported to his native India.
Meanwhile, another code thief, ex-Goldman Sachs programmer Sergey Aleynikov, has been returned to custody after being declared a flight risk.
Aleynikov was found guilty in December by a New York jury of stealing propriety code connected to the investment bank's high-frequency trading platform. He has since been on bail pending sentencing later this month.
However, last week District Judge Denise Cote revoked bail because the "government has abiding concerns about the risk of the defendant's flight, in light of new information about the defendant's family circumstances," according to a letter from the US Attorney seen by Bloomberg.