Starbucks cafe's wi-fi made computers mine crypto-currency
Image copyright GETTY IMAGES Image caption It is not known who was behind the mining operation Starbucks has acknowledged that visitors to one of its branches were unwittingly recruited into a crypto-currency mining operation. The wi-fi service provided by one of the coffee chain's Buenos Aires outlets surreptitiously hijacked connected computers to use their processing power to create digital cash. Starbucks said that it had taken "swift action" to address the problem. But one expert said it highlighted the risks of using public wi-fi. It is not clear how long the malware involved was active or how many customers were affected. The issue was identified only when the chief executive of a New York-based technology company logged into the service and noticed the problem. Skip Twitter post by @imnoah Hi @Starbucks @StarbucksAr did you know that your in-store wifi provider in Buenos Aires forces a 10 second delay when you first connect to the wifi