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Adidas has taken its website content offline after suffering what it described as a "sophisticated, criminal cyber-attack".

The German sportswear maker said it had no evidence that its consumers' data had been impacted, but that it was taking down the affected sites to protect visitors.

The news follows a series of attacks against Sony earlier in the year.

Millions of users details were compromised.

A statement from Adidas said that it discovered the incident on 3 November.

The firm said it had since put in place additional data security measures and had started to relaunch its websites.

"Nothing is more important to us than the privacy and security of our consumers' personal data," the statement added.

"We appreciate your understanding and patience during this time".

The news comes less than a week after internet security experts reported that 29 chemicals firms had been targeted by a series of cyber-attacks.

Data was also stolen from Sony's PlayStation Network in April, compromising around 77 million gamers' personal details.

The firm's Sony Pictures website and Sony Music pages were targeted by subsequent attacks, prompting several apologies.