Hide Navigation Hide TOC Silk Typhoon (9728610a-17cb-5cac-9322-ef19ae296a29) Microsoft threat actor profile. Origin/Threat: China. Cluster A Galaxy A Cluster B Galaxy B Level HAFNIUM (4f05d6c1-3fc1-4567-91cd-dd4637cc38b5) Threat Actor Silk Typhoon (9728610a-17cb-5cac-9322-ef19ae296a29) Microsoft Activity Group actor 1 HAFNIUM (4f05d6c1-3fc1-4567-91cd-dd4637cc38b5) Threat Actor HAFNIUM (fbb66d6c-0faa-49cc-8aa3-2f9bd4e9c298) Microsoft Activity Group actor 2