OSLO, Sweden: The Swedish Coop grocery store chain closed its 800 stores on Sunday after a ransomware attack on an American IT manager left it unable to ring up sales on its cash registers.
The ransomware attack commandeered technology management software from Miami-based Kaseya.
According to Coop officials, payments could not be accepted after a tool used to remotely update its checkout tills was affected by the attack.
“We have been troubleshooting and restoring all night, but have communicated that we will need to keep the stores closed today,” Coop spokesperson Therese Knapp said.
Meanwhile, Swedish news agency TT said Kaseya technology was also used by the Swedish company Visma Esscom to manage servers and other devices for some Swedish businesses.
The disruptions in Sweden also affected railway services and a pharmacy chain.
Defense Minister Peter Hultqvist told Swedish Television that the attack was “very dangerous” and indicated how business and state agencies needed to be better prepared for future attacks.
“In a different geopolitical situation, it may be government actors who attack us in this way in order to shut down society and create chaos,” he said.
In Saturday’s attack, hackers encrypted files belonging to Kaseya’s customers, promising to decrypt them in return for payment.
Originally Appeared Here