Chinese tech giant Huawei can reportedly access the networks it helped build that are being used by mobile phones around the world.
It's been using backdoors intended for law enforcement for over a decade, The Wall Street Journal reported Tuesday, citing US officials.
The details were disclosed to the UK and Germany at the end of 2019 after the US had noticed access since 2009 across 4G equipment, according to the report.
"We have evidence that Huawei has the capability secretly to access sensitive and personal information in systems it maintains and sells around the world," Robert O'Brien, national security adviser, reportedly said.
The White House and Huawei didn't immediately respond to a request for comment, but the tech giant rejected the claims according to the Journal.
Huawei's 5G approval there came despite the US urging the UK to ban the Chinese telecommunications giant.
Huawei was blacklisted in May when it was added to the United States' "entity list" (PDF). »