On December 31, OFAC issued regulations to implement Executive Order 13694 of April 1, 2015, “Blocking the Property of Certain Persons Engaging in Significant Malicious Cyber-Enabled Activities.” Effective immediately, the regulations prohibit all transactions prohibited by Executive Order 13694, including dealing in the property or interests in property, that come within the United States, of blocked persons. Among other things, under Executive Order 13694, a party may be blocked if the U.S. government finds the party “to be responsible for or complicit in, or to have engaged in, directly or indirectly, cyber-enabled activities originating from, or directed by persons located, in whole or in substantial part, outside the United States that are reasonably likely to result in, or have materially contributed to, a significant threat to the national security, foreign policy, or economic health or financial stability of the United States” and that have one of the purposes or effects enumerated in the Order. More information on the Executive Order is available here. OFAC’s Specially Designated Nationals (SDN) List will include persons blocked pursuant to the Executive Order and regulation. OFAC intends to supplement the new regulations with a more comprehensive set of regulations, “which may include additional interpretive and definitional guidance, regarding ‘cyber-enabled’ activities, and additional general licenses and statements of licensing policy.”