(Telecompaper) Telecom Italia (TIM) has decided to exclude Huawei from a lucrative tender to build its 5G core network in both Italy and Brazil, reports Reuters, citing two unnamed sources. The company has invited its current supplier Ericsson as well as Nokia, Cisco, Mavenir and Microsoft-owned Affirmed Networks to bid for the tender, but has so far chosen not to include Huawei on the list of suppliers amid security concerns.