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U.S. Warns British Firms Not to Use Huawei's Wireless 5G Gear

  • Ambassador says export ban threatens the current supply chain
  • Washington is pushing for allies to shun the Chinese vendor
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Why Huawei and 5G Pose a Cyber Threat to the U.S.

U.K. wireless carriers building fifth-generation networks with Huawei Technologies Co. equipment will shortly be stymied by a U.S. export ban on key components, according to the official leading Washington’s campaign against the company.

A decision by the U.S. to add Huawei to an export blacklist will cut the Chinese group off from using parts supplied by U.S. semiconductor makers such as Broadcom Inc. and Qualcomm Inc. after a delay to the ban expires on Aug. 19.