Unable to breach the computer network at a big oil company, hackers infected with malware the online menu of a Chinese restaurant that was popular with employees. When the workers browsed the menu, they inadvertently downloaded code that gave the attackers a foothold in the business
Security experts summoned to fix the problem were not allowed to disclose the details of the breach, but the lesson from the incident was clear: Companies scrambling to seal up their systems from hackers and government snoops are having to look in the unlikeliest of places for vulnerabilities.

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