On April 15, 2021, U.S. President Joe Biden signed a broad executive order (E.O.) authorizing new sanctions against Russia for "specified harmful foreign activities." The new sanctions allow the U.S. to target individuals and companies in Russia's defense and technology sectors, a number of Russian government officials, and those "complicit" or "indirectly engaged" in activities including, but not limited to, interference with foreign elections, cyber-attacks, corruption, and actions that "undermine democratic processes."
The Office of Foreign Assets Control (OFAC) subsequently issued a related directive and added several new parties to the Specially Designated Nationals and Blocked Persons List (SDN List), including six Russian technology companies. U.S. persons are generally prohibited from transacting business with parties listed on the SDN List.
The full E.O. is available at the link here:
The OFAC press release can be found at the link here: