China briefly blocked nearly all encrypted internet traffic in the early hours of Aug. 20, in what cybersecurity researchers and engineers believe was a large-scale test of an upgraded version of the country’s internet censorship system, known as the GreatRead more https://www.theepochtimes.com/china/internet-outage-before-major-parade-suggests-china-upgraded-firewall-to-tighten-controls-5904326