SIMI VALLEY, Calif. — The U.S. military has taken actions against ransomware groups as part of its surge against organizations launching attacks against American companies, the nation’s top cyberwarrior said on Saturday, the first public acknowledgment of offensive measures against such organizations.
Gen. Paul M. Nakasone, the head of U.S. Cyber Command and the director of the National Security Agency, said that nine months ago, the government saw ransomware attacks as the responsibility of law enforcement.
In response, the government is taking a more aggressive, better coordinated approach against this threat, abandoning its previous hands-off stance. Cyber Command, the N.S.A. and other agencies have poured resources into gathering intelligence on the ransomware groups and sharing that better understanding across the government and with international partners.
“The first thing we have to do is to understand the adversary and their insights better than we’ve ever understood them before,” General Nakasone said in an interview on the sidelines of the Reagan National Defense Forum, a gathering of national security officials.
General Nakasone would not describe the actions taken by his commands, nor what ransomware groups were targeted. But he said one of the goals was to “impose costs,” which is the term military officials use to describe punitive cyberoperations.
“Before, during and since, with a number of elements of our government, we have taken actions and we have imposed costs,” General Nakasone said. “That’s an important piece that we should always be mindful of.”
In September, Cyber Command diverted traffic around servers being used by the Russia-based REvil ransomware group, officials briefed on the operation have said. The operation came after government hackers from an allied country penetrated the servers, making it more difficult for the group to collect ransoms. After REvil detected the U.S. action, it shut down at least temporarily. That Cyber Command operation…