https://www.cnbc.com/2018/08/06/tsmc-virus-worries-over-apple-iphone-chip-supplies.html

Taiwan Semiconductor Manufacturing Co. (TSMC), which makes chips for Apple's iPhones, suffered a computer virus outbreak and warned it could cause shipment delays as well as hit revenue.

The issue, which occurred on August 3, was publicly disclosed Saturday and affected a number of computer systems and so-called fab tools that are required in the chip-making process. TSMC said that there could be delays to product shipments, adding that it would reduce third quarter revenue by 3 percent, or $255 million, from its previous guidance.