The new U.S. Treasury Department regulations governing reviews by the Committee on Foreign Investment in the United States took effect earlier this month and so-called financial technology, or “fintech,” companies and their venture capital and private equity investors are among the industries most affected, foreign trade and national security lawyers said.

In-house lawyers for these companies, which broadly defined include payment systems, mobile banking and insurance-focused technologies, cryptocurrency and exchange platforms and other innovative disrupters of the financial services industry, as well as asset managers, will have to pay close attention to the changes.