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‘Salt Typhoon’ Hackers Infiltrated National Guard, Had 9 Months of Access: Memo

UNITED STATES, JUL 16 – Salt Typhoon accessed military network data for nine months, stealing credentials and network diagrams to aid further cyber espionage and attacks on U.S. critical infrastructure, officials said.

  • In 2024, the Chinese government-backed hacking group Salt Typhoon gained unauthorized access to a National Guard system within a U.S. state and operated undetected for nine months, from March through December.
  • During this operation, Salt Typhoon exploited weaknesses in networking hardware to exfiltrate 1,462 configuration files from nearly 70 entities within the U.S. government and essential infrastructure sectors spanning 12 industries.
  • During the breach, Salt Typhoon obtained network layouts, login details for system administrators, personal data of personnel, and communication records with units across all 50 states and multiple U.S. territories, which facilitated subsequent intrusions.
  • A memo issued by the Department of Homeland Security in early June confirmed the breach and advised cybersecurity teams to patch vulnerabilities such as CVE-2024-3400, deactivate unnecessary services, segment SMB traffic, enable SMB signing, and strengthen access controls.
  • The breach highlights persistent vulnerabilities in U.S. military and critical networks, with investigations ongoing and warnings that unresolved cybersecurity gaps allow continued foreign access.
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CSO Online broke the news in on Wednesday, July 16, 2025.
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