Push message claims fashion company’s data has been ‘fully compromised’, but website and app remain online

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Asos is investigating after users of its mobile app received a notification claiming hackers had “fully compromised” the online fashion retailer’s data.

The value of Asos’s shares on the London Stock Exchange dived almost 10% after thousands of customers received a notification titled “Asos hacked” with a link that sent them to the Telegram messaging service.