http://www.washingtonpost.com/blogs/the-switch/wp/2018/06/07/googles-ties-to-chinese-telecom-firm-huawei-raise-alarm-in-congress/

Key members of Congress on Thursday took aim at Google’s relationship with Huawei, a Chinese telecom firm with alleged ties to the government in Beijing, out of fear it may have exposed smartphone users’ text messages and other data to privacy and security threats.

In a letter sent to Google’s parent company, Alphabet, Sen. Mark R. Warner (D-Va.) said the tech giant’s deals with Huawei and two other Chinese companies, Xiaomi and Tencent, raise “serious national security concerns.” He pressed the search giant to detail more information about the data it may have shared with the firms and where it is stored — and he issued a similar request to Twitter.