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threat actor · CN

HAFNIUM

also tracked as zhang yu 1, silk typhoon 1

2 stories · 2 in the wild · July 29, 2026 – October 8, 2026

evidence: 2 observed

sectors

  • education 1 · Oct 8
  • healthcare 1 · Oct 8
  • technology 1 · Jul 29

geography

  • china 1 · Oct 8
  • united states 1 · Oct 8

techniques

  • espionage 1 · Oct 8

attack phases seen

  • Collection 1 · Oct 8

what we reported, newest first, grouped by story

October 8, 2026

  • The State Department posted a $10M reward for Zhang Yu, described as a prominent figure in the Hafnium campaign and accused of MSS-directed espionage against COVID-19 research at US universities (The Record). · Oct 8 · observed · as zhang yu · Arrests & Enforcement

July 29, 2026

  • Huntress declassified its role in an FBI manhunt tied to the 2021 Silk Typhoon Exchange campaign — which it puts at 88,000 compromised servers, far beyond the "limited and targeted" framing at the time — ending in the arrest of a state-backed operator (Huntress). · Jul 29 · observed · as silk typhoon · Threat Activity