T1199 · ATT&CK technique
Trusted Relationship
14 actors on record using it
Every mark is an actor ATT&CK records using this technique. Red ones also exploit a CVE in CISA KEV.
Open T1199 on attack.mitre.orgAdversaries may breach or otherwise leverage organizations who have access to intended victims. Access through trusted third party relationship abuses an existing connection that may not be protected or receives less scrutiny than standard mechanisms of gaining access to a network.
Source: MITRE ATT&CK, T1199. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.
Every one of the 14 is a mark on the map. Named now: 1 to 14, most on record first.
- APT28
- APT29
- Sandworm
- Threat Group-3390
- menuPass
- Nimbus Manticore
- Handala Hack
- Salt Typhoon
- Silk Typhoon
- LAPSUS$
- Gold Blade
- Sea Turtle
- POLONIUM
- GOLD SOUTHFIELD
Zoom in on the map and the dots under the middle of it are named where they are.
Data as of 2026-11-15. CVE List through 2026-11-15 · EPSS of 2026-11-14 · CISA KEV checked 2026-11-15. Sources: MITRE ATT&CK (© The MITRE Corporation, reproduced and distributed with its permission), the MISP Galaxy (CC0), and CyberSIXT's own coverage.