A hacker group backed by the Chinese regime has exploited vulnerabilities in the online systems of at least six U.S. state governments in order to compromise and gain access to those networks, cybersecurity firm Mandiant said March 8. Mandiant’s lengthy report presents the findings of an investigation that began in the spring of 2021, in response to a breach by a hacker group known as “APT41” of an unnamed state government’s system, and continued through last month. “Our investigation into APT41 activity between May 2021 and February 2022 uncovered evidence of a deliberate campaign targeting U.S. state governments. During this...