T1590.003sub-technique of T1590 Gather Victim Network Information

Network Trust Dependencies

PREnothing on this site yetT1590.003 on attack.mitre.org

Adversaries may gather information about the victim's network trust dependencies that can be used during targeting. Information about network trusts may include a variety of details, including second or third-party organizations/domains (ex: managed service providers, contractors, etc.) that have connected (and potentially elevated) network access.
MITRE ATT&CK 19.2, retrieved 2026-09-12

how MITRE says to see it

Detection of Network Trust Dependencies

Much of this activity may have a very high occurrence and associated false positive rate, as well as potentially taking place outside the visibility of the target organization, making detection difficult for defenders.

what reduces it

M1056 Pre-compromise. This technique cannot be easily mitigated with preventive controls since it is based on behaviors performed outside of the scope of enterprise defenses and controls. Efforts should focus on minimizing the amount and sensitivity of data available to external parties.

the rest of T1590

T1590.001 Domain Properties · not covered yet
T1590.002 DNS · not covered yet
T1590.004 Network Topology · not covered yet
T1590.005 IP Addresses · not covered yet
T1590.006 Network Security Appliances · not covered yet

The description, detection analytics and mitigations are reproduced from MITRE ATT&CK, version 19.2, under its terms of use. The checklists, hunts, labs and everything else linked here are this site’s.