Microsoft fixes four zero-day flaws in Exchange Server exploited by China's ‘Hafnium’ spies to steal victims' data

Patch ASAP: Holes used to raid top-tier targets and stash info in Kim Dotcom's old cloud file locker
Microsoft says Beijing-backed hackers are exploiting four zero-day vulnerabilities in Exchange Server to steal data from US-based defense contractors, law firms, and infectious disease researchers.…