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Tens of thousands of organizations around the world using Microsoft’s Exchange Server have been compromised by a cyber campaign suspected to have ties to China.
This campaign exploited software vulnerabilities to seize control of systems and steal data, according to researchers.
Security researchers at Volexity first detected the hack in January, according to Microsoft. Volexity has provided a full overview of the technical details on its
website. FireEye’s Mandiant also reported evidence that the campaign hit U.S. retailers, local governments, a university and an engineering firm. Cybersecurity blogger Brian Krebs
reported at least 30,000 U.S. organizations could be affected, among them being small businesses and municipalities.