The following is the April 23, 2021 Congressional Research Service In Focus report, National Security Implications of Fifth Generation (5G) Mobile Technologies.
From the report
National Security Concerns According to a DIB assessment, China is the current leader in sub-6 technologies and is likely to deploy the world’s first 5G wide-area network. Chinese companies, which often receive government subsidies (e.g., subsidized land for facilities, R&D grants), are therefore well-positioned as global 5G suppliers. Huawei has signed contracts for the construction of 5G infrastructure in around 30 countries, including Iceland, Turkey, and the United Kingdom.
Some experts are concerned that vulnerabilities in Chinese equipment could be used to conduct cyberattacks or military/industrial espionage. These experts claim vulnerabilities were introduced through the poor business practices of many Chinese companies. However, they note that…