Threat actor · all actors

Star BlizzardG1033 unknown

aka Star Blizzard, SEABORGIUM, Callisto Group, TA446, COLDRIVER

Last updated: 2026-07-03

0attributed CVEs

31ATT&CK techniques

0.0IDF score (tooling uniqueness)

0exclusive CVEs

—years active

About this actor

[Star Blizzard](https://attack.mitre.org/groups/G1033) is a cyber espionage and influence group originating in Russia that has been active since at least 2019. [Star Blizzard](https://attack.mitre.org/groups/G1033) campaigns align closely with Russian state interests and have included persistent phishing and credential theft against academic, defense, government, NGO, and think tank organizations in NATO countries, particularly the US and the UK.(Citation: Microsoft Star Blizzard August 2022)(Citation: CISA Star Blizzard Advisory December 2023)(Citation: StarBlizzard)(Citation: Google TAG COLDRIVER January 2024)

Source: MITRE ATT&CK

Activity timeline

No activity events recorded.

Profile

CVE	Risk	CVSS	EPSS	Published	Products
No attributed CVEs.

Mitigating controls (NIST 800-53)

Control	Techniques covered	Coverage
`CM-6`	15 / 31	48%
`SI-4`	14 / 31	45%
`CM-2`	12 / 31	39%
`CA-7`	11 / 31	35%
`AC-4`	10 / 31	32%
`SC-7`	10 / 31	32%
`SI-3`	10 / 31	32%
`SI-7`	8 / 31	26%
`AC-3`	7 / 31	23%
`SC-44`	7 / 31	23%
`SI-8`	7 / 31	23%
`IA-2`	6 / 31	19%
`IA-9`	6 / 31	19%
`AC-17`	5 / 31	16%
`AC-6`	5 / 31	16%

Co-occurring actors

None.