MITRE ATT&CK Technique
Reconnaissance T1591.001
Description

Adversaries may gather the victim's physical location(s) that can be used during targeting. Information about physical locations of a target organization may include a variety of details, including where key resources and infrastructure are housed. Physical locations may also indicate what legal jurisdiction and/or authorities the victim operates within. Adversaries may gather this information in various ways, such as direct elicitation via [Phishing for Information](https://attack.mitre.org/techniques/T1598). Physical locations of a target organization may also be exposed to adversaries via online or other accessible data sets (ex: [Search Victim-Owned Websites](https://attack.mitre.org/techniques/T1594) or [Social Media](https://attack.mitre.org/techniques/T1593/001)).(Citation: ThreatPost Broadvoice Leak)(Citation: SEC EDGAR Search) Gathering this information may reveal opportunities for other forms of reconnaissance (ex: [Phishing for Information](https://attack.mitre.org/techniques/T1598) or [Search Open Websites/Domains](https://attack.mitre.org/techniques/T1593)), establishing operational resources (ex: [Develop Capabilities](https://attack.mitre.org/techniques/T1587) or [Obtain Capabilities](https://attack.mitre.org/techniques/T1588)), and/or initial access (ex: [Phishing](https://attack.mitre.org/techniques/T1566) or [Hardware Additions](https://attack.mitre.org/techniques/T1200)).

Supported Platforms
PRE
Created

April 29, 2026

Last Updated

April 29, 2026

STIX Data
{'created': '2020-10-02T16:32:33.126Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': "Adversaries may gather the victim's physical location(s) that "
                'can be used during targeting. Information about physical '
                'locations of a target organization may include a variety of '
                'details, including where key resources and infrastructure are '
                'housed. Physical locations may also indicate what legal '
                'jurisdiction and/or authorities the victim operates within.\n'
                '\n'
                'Adversaries may gather this information in various ways, such '
                'as direct elicitation via [Phishing for '
                'Information](https://attack.mitre.org/techniques/T1598). '
                'Physical locations of a target organization may also be '
                'exposed to adversaries via online or other accessible data '
                'sets (ex: [Search Victim-Owned '
                'Websites](https://attack.mitre.org/techniques/T1594) or '
                '[Social '
                'Media](https://attack.mitre.org/techniques/T1593/001)).(Citation: '
                'ThreatPost Broadvoice Leak)(Citation: SEC EDGAR Search) '
                'Gathering this information may reveal opportunities for other '
                'forms of reconnaissance (ex: [Phishing for '
                'Information](https://attack.mitre.org/techniques/T1598) or '
                '[Search Open '
                'Websites/Domains](https://attack.mitre.org/techniques/T1593)), '
                'establishing operational resources (ex: [Develop '
                'Capabilities](https://attack.mitre.org/techniques/T1587) or '
                '[Obtain '
                'Capabilities](https://attack.mitre.org/techniques/T1588)), '
                'and/or initial access (ex: '
                '[Phishing](https://attack.mitre.org/techniques/T1566) or '
                '[Hardware '
                'Additions](https://attack.mitre.org/techniques/T1200)).',
 'external_references': [{'external_id': 'T1591.001',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/techniques/T1591/001'},
                         {'description': 'Seals, T. (2020, October 15). '
                                         'Broadvoice Leak Exposes 350M '
                                         'Records, Personal Voicemail '
                                         'Transcripts. Retrieved October 20, '
                                         '2020.',
                          'source_name': 'ThreatPost Broadvoice Leak',
                          'url': 'https://threatpost.com/broadvoice-leaks-350m-records-voicemail-transcripts/160158/'},
                         {'description': 'U.S. SEC. (n.d.). EDGAR - Search and '
                                         'Access. Retrieved November 17, 2024.',
                          'source_name': 'SEC EDGAR Search',
                          'url': 'https://www.sec.gov/edgar/search/'}],
 'id': 'attack-pattern--ed730f20-0e44-48b9-85f8-0e2adeb76867',
 'kill_chain_phases': [{'kill_chain_name': 'mitre-attack',
                        'phase_name': 'reconnaissance'}],
 'modified': '2025-10-24T17:49:34.503Z',
 'name': 'Determine Physical Locations',
 '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': '1.1'}
Quick Actions
Related Threat Actors (1)
Magic Hound
High