UnclassifiedIdeologyAdvanced sophistication
Storm-0558
Storm-0558 is a China-attributed threat actor group with an ideological motive, tracked by Brandefense. It targets 4 sectors, including Government and Telecommunications, in the United States. It uses 1 MITRE ATT&CK technique.
Also known as
- Antique Typhoon
- Origin
- China
- Techniques
- 1
- Exploited CVEs
- No CVE data
- First seen
- Jan 1, 2023
- Record updated
Who They Target.
Countries · 1
About Storm-0558.
A Chinese threat actor group previously criticized for compromising Microsoft Exchange Online mailboxes.
Last updated Sep 11, 2026. Compiled by Brandefense technologies from structured threat intelligence and reviewed by Brandefense analysts. Techniques follow the MITRE ATT&CK framework.