Sea Turtle
Sea Turtle is a Türkiye-attributed nation-state APT group with an espionage motive, tracked by Brandefense. It targets 9 sectors, including Government and Technology, in 18 countries, including the United States and Türkiye. It uses 62 MITRE ATT&CK techniques and exploits 6 known CVEs.
- Teal Kurma
- Cosmic Wolf
- SILICON
- Marbled Dust
- UNC1326
- Origin
- Türkiye
- Techniques
- 62
- Exploited CVEs
- 6
- First seen
- Jan 1, 2017
- Last seen
- Jan 5, 2024
- Record updated
Who They Target.
About Sea Turtle.
Sea Turtle is a Turkiye-linked threat actor active since at least 2017 performing espionage and service provider compromise operations against victims in Asia, Europe, and North America. Sea Turtle is notable for targeting registrars managing ccTLDs and complex DNS-based intrusions where the threat actor compromised DNS providers to hijack DNS resolution for ultimate victims, enabling Sea Turtle to spoof log in portals and other applications for credential collection.
Last updated Sep 30, 2026. Compiled by Brandefense technologies from structured threat intelligence and reviewed by Brandefense analysts. Techniques follow the MITRE ATT&CK framework.