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UnclassifiedIdeologyIntermediate sophistication

UAC-0255

UAC-0255 is a threat actor group with an ideological motive, tracked by Brandefense. It uses 7 MITRE ATT&CK techniques.

Also known as
  • Cyber Serp
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Techniques
7
Exploited CVEs
No CVE data
First seen
Mar 26, 2026
Last seen
Mar 28, 2026
Record updated

About UAC-0255.

UAC-0255 is the retained canonical threat actor entity for source-backed activity associated with the Cyber Serp naming boundary. CERT-UA#21075 documents the AGEWHEEZE activity window from March 26 through March 27, 2026. The Cyber Serp attribution is claimed and must not replace UAC-0255 as the canonical entity identity without a separate internal taxonomy decision.

Last updated Jul 28, 2026. Compiled by Brandefense technologies from structured threat intelligence and reviewed by Brandefense analysts. Techniques follow the MITRE ATT&CK framework.