US sanctions Russian citizen accused of playing key role in Medibank ransomware attack

The U.S., Australian and U.K. governments sanctioned Alexander Ermakov for his alleged role in the October 2022 REvil ransomware attack on Medibank that exfiltrated and published sensitive personal and health records for about 9.7 million customers after a refused $10M ransom demand, with the breach linked to stolen staff credentials and wider REvil activity.