MITRE ATT&CK Technique
Reconnaissance T1590.003
Description

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. Adversaries may gather this information in various ways, such as direct elicitation via [Phishing for Information](https://attack.mitre.org/techniques/T1598). Information about network trusts may also be exposed to adversaries via online or other accessible data sets (ex: [Search Open Technical Databases](https://attack.mitre.org/techniques/T1596)).(Citation: Pentesting AD Forests) Gathering this information may reveal opportunities for other forms of reconnaissance (ex: [Active Scanning](https://attack.mitre.org/techniques/T1595) or [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593)), establishing operational resources (ex: [Acquire Infrastructure](https://attack.mitre.org/techniques/T1583) or [Compromise Infrastructure](https://attack.mitre.org/techniques/T1584)), and/or initial access (ex: [Trusted Relationship](https://attack.mitre.org/techniques/T1199)).

Supported Platforms
PRE
Created

April 29, 2026

Last Updated

April 29, 2026

STIX Data
{'created': '2020-10-02T15:47:59.457Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': "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.\n'
                '\n'
                'Adversaries may gather this information in various ways, such '
                'as direct elicitation via [Phishing for '
                'Information](https://attack.mitre.org/techniques/T1598). '
                'Information about network trusts may also be exposed to '
                'adversaries via online or other accessible data sets (ex: '
                '[Search Open Technical '
                'Databases](https://attack.mitre.org/techniques/T1596)).(Citation: '
                'Pentesting AD Forests) Gathering this information may reveal '
                'opportunities for other forms of reconnaissance (ex: [Active '
                'Scanning](https://attack.mitre.org/techniques/T1595) or '
                '[Search Open '
                'Websites/Domains](https://attack.mitre.org/techniques/T1593)), '
                'establishing operational resources (ex: [Acquire '
                'Infrastructure](https://attack.mitre.org/techniques/T1583) or '
                '[Compromise '
                'Infrastructure](https://attack.mitre.org/techniques/T1584)), '
                'and/or initial access (ex: [Trusted '
                'Relationship](https://attack.mitre.org/techniques/T1199)).',
 'external_references': [{'external_id': 'T1590.003',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1590/003'},
                         {'description': 'García, C. (2019, April 3). '
                                         'Pentesting Active Directory Forests. '
                                         'Retrieved October 20, 2020.',
                          'source_name': 'Pentesting AD Forests',
                          'url': 'https://www.slideshare.net/rootedcon/carlos-garca-pentesting-active-directory-forests-rooted2019'}],
 'id': 'attack-pattern--36aa137f-5166-41f8-b2f0-a4cfa1b4133e',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'reconnaissance'}],
 'modified': '2025-10-24T17:48:38.803Z',
 'name': 'Network Trust Dependencies',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': False,
 'spec_version': '2.1',
 'type': 'attack-pattern',
 'x_mitre_attack_spec_version': '3.2.0',
 'x_mitre_deprecated': False,
 'x_mitre_detection': '',
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_is_subtechnique': True,
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_platforms': ['PRE'],
 'x_mitre_version': '1.0'}
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