No group or individual has claimed responsibility for the attack or demanded a ransom.
Supermarket refrigeration systems are operated by controllers that can be accessed online.
“These refrigeration units are mechanical devices that monitor performance, temperature and utilization,” cybersecurity expert Nick Paulukow said.
“It’s connected to the internet to allow controllers to kind of monitor these systems.”
Video below: Massachusetts water systems monitored as cyberattacks target other states Paulukow said this type of hack could also happen in American supermarkets and even to modern appliances in homes that are connected to the internet.