Share of computer manufacturer Lenovo listed in HK dropped almost 23 % this morning after a report from Bloomberg BusinessWeek that said data center equipment run by Amazon Web Services and Apple may have been subject to surveillance from the Chinese government through a tiny microchip inserted during the equipment manufacturing process.

The surveillance chip might have been implanted into Super Micro motherboards that are supplied to data centres.

Apple, AWS and Super Micro dispute the report. Shares of the iPhone-maker fell 1.75 percent and Amazon declined about 2.21 percent in Thursday trading.

In a response to CNBC, Lenovo said that Super Micro “is not a supplier to Lenovo in any capacity. Furthermore, as a global company we take extensive steps to protect the ongoing integrity of our supply chain.”

Taiwanese mainboard manufacturers are left unscathed, shares of ASUS, MSI, Gigabyte maintained or dropped 1% ~ 5% this morning which is not huge.

Source CNBC