Law enforcement agencies from Europe and the U.S. seized the infrastructure and arrested alleged members of the Ragnar Locker ransomware gang this week.
U.S. authorities warn that cooperative efforts between state-sponsored actors and cybercrime groups make life more difficult for defenders and law enforcement.
Public disclosure of the Caesars cyberattack comes as MGM Resorts continues to face disruption across its hotels and casinos due to a separate cyber incident.
Researchers said they observed new tactics being used by the well-known ransomware group in attacks against a critical infrastructure entity in the U.S. and an IT integrator in Latin America.
According to the White House, in last year’s academic year at least eight K-12 school districts in the U.S. were impacted by significant cyberattacks, and four of those caused schools to cancel classes or close completely.