On successive days last week, the Department of Justice (DOJ) unveiled enforcement actions against international cybercriminal organizations that utilized ransomware to infect computer systems and then extort payment, often in the form of cryptocurrency, from victims worldwide. First, the Criminal Division’s Computer Crime and Intellectual Property Section and the U.S. Attorney’s Office for the Middle District of Florida announced the unsealing of charges against a Canadian national for his alleged involvement in the ransomware scheme known as NetWalker that generated tens of millions of dollars from businesses, public entities, and individuals whose computer databases were encrypted and rendered useless, pending satisfaction of a ransom demand. The following day, the U.S. Attorney’s Office for the Middle District of North Carolina and the Criminal Division’s Computer Crime and Intellectual Property Section revealed their participation in a multinational enforcement operation that disrupted and dismantled Emotet, a botnet that utilized malware, including ransomware, to target critical infrastructure in the United States and abroad. These actions highlight U.S. law enforcement’s increased focus on preventing ransomware attacks, which in the future will rely on both traditional collaboration among international law enforcement agencies and reporting from private entities over which the government exercises regulatory control.