Nortel networks haven't been around for nearly a decade. I've seen lots of news about 5G/Huaewi and 'core networks' only in the recent years in western countries (UK/US mainly). However, I haven't seen anything published that really reflects new risks/major backdoored products.
I wouldn't 100% trust anything built in China, but there must be some reason people are only taking action now? Unless it's just "better late than never" response after years of this.
I wouldn't 100% trust anything built in China, but there must be some reason people are only taking action now? Unless it's just "better late than never" response after years of this.