Agencies in the United States and the United Kingdom on Friday published a joint report providing more details on the activities of the Russian cyberspy group that is believed to be behind the attack on IT management company SolarWinds. The report reveals that the hackers started using the open-source adversary simulation framework Sliver after some of their operations were exposed.
Read the original article: US-UK Gov Warning: SolarWinds Attackers Add Open-Source PenTest Tool to Arsenal