Japanese Bridgestone reports ransomware attack on US subsidiary

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TOKYO, March 18 (Reuters) – Japanese tire maker Bridgestone Corp (5108.T) said on Friday its U.S. subsidiary had been hit by a ransomware attack, just weeks after suppliers to automaker Toyota Motor Corp ( 7203.T) reported similar attacks.

Bridgestone said unauthorized third-party access was made at Bridgestone Americas on February 27, prompting it to shut down the computer network and production at its factories in North and Central America for about a week.

An investigation later determined the incident was a ransomware attack, the company said, but declined to provide further details, including ransom demands and the impact of the production suspension.

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Bridgestone, which supplies tires and other auto components to Toyota and other automakers, said it then reconnected the network after a thorough security check.

The announcement comes about two weeks after Toyota’s main supplier Denso Corp (6902.T) detected unauthorized access via a ransomware attack at a group company that handles sales and engineering in Germany. Read more

Another Toyota supplier was hit by a cyberattack late last month, prompting Japan’s biggest automaker to halt domestic production for a day on March 1, affecting production of around 13,000 vehicles. Read more

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Reporting by Mariko Katsumura; Editing by Christopher Cushing and Stephen Coates

Our standards: The Thomson Reuters Trust Principles.

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