Cybersecurity firm Mandiant said Tuesday in its new threat report that a Chinese-state sponsored espionage group targeted six U.S. state government networks. File SP-Photo/Shutterstock March 8 (UPI) — Chinese government-backed hackers have breached at least six U.S. state government networks since last May, Mandiant cybersecurity firm confirmed Tuesday in a new report. Mandiant identifies the Chinese-state sponsored espionage hacking group as APT 41 in the new report, and classifies it among the Advanced Persistent Threats groups, which it pays special attention to since they receive direction and support from the national government. APT41 exploited vulnerabilities in web applications to compromise…