The U.S. Treasury Department has sanctioned a Russian company, Operation Zero, and the individuals behind it after accusing them of buying stolen cyber tools for millions in cryptocurrency and re-selling those technologies, which were created to be used by the U.S. government.

The tools bought and sold by newly sanctioned Sergey Sergeyevich Zelenyuk and his business, Operation Zero, were said to be originally stolen by an Australian national, Peter Williams, who once worked at the defense contractor that made the national-security focused software “for the exclusive use of the U.S. government and select allies.” Williams pleaded guilty last year to selling trade secrets.

“Treasury will continue to work alongside the rest of the Trump…