As the U.S. reportedly readies for retaliation against Russia for hacking into some of the government’s most sensitive federal networks, the U.S. is facing another old adversary in cyberspace: China. Microsoft last week revealed a new hacking group it calls Hafnium, which operates in, and is backed by, China. Hafnium used four previously unreported vulnerabilities … Continue reading America’s small businesses face the brunt of China’s Exchange server hacks