STOCKHOLM — One of Sweden's biggest supermarket chains said Saturday
it had to temporarily close around 800 stores nationwide after a
cyberattack blocked access to its checkouts.
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"One of our subcontractors was hit by a digital attack, and that's why
our checkouts aren't working anymore," Coop Sweden, which accounts for
around 20 percent of the sector, said in a statement.
"We regret the situation and will do all we can to reopen
swiftly," the cooperative added.
Coop Sweden did not name the subcontractor or reveal the hacking method used
against it beginning on Friday evening.
But the Swedish subsidiary of the Visma software group said the problem was
linked to a mayor cyberattack on US IT company Kaseya on Friday.
Kaseya has urged customers to shut down servers running its VSA platform
after dozens were hit with ransomware attacks.
A wave of ransomware attacks has struck worldwide recently, especially in
the United States.
Ransomware attacks typically involve locking away data in systems using
encryption, making companies pay to regain access.
Last year, hackers extorted at least $18 billion using such software,
according to security firm Emsisoft.
In recent weeks, such attacks have hit oil pipelines, health services, and
major firms, and made it onto the agenda of US President Joe Biden's June
meeting with Russian counterpart Vladimir Putin.
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