T1591 Gather Victim Org Information

Technique: T1591
Tactics: Reconnaissance
Research, 90 days: 2
KEV CVEs mapped: 0
SigmaHQ rules: 0
Elastic, Splunk: 0
thrunt rules: 0
Upstream: https://attack.mitre.org/techniques/T1591

MITRE description

Adversaries may gather information about the victim's organization that can be used during targeting. Information about an organization may include a variety of details, including the names of divisions/departments, specifics of business operations, as well as the roles and responsibilities of key employees. Adversaries may gather this information in various ways, such as direct elicitation via [Phishing for Information](https://attack.mitre.org/techniques/T1598). Information about an organization may also be exposed to adversaries via online or other accessible data sets (ex: [Social Media](https://attack.mitre.org/techniques/T1593/001) or [Search Victim-Owned Websites](https://attack.mitre.org/techniques/T1594)).(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: [Establish Accounts](https://attack.mitre.org/techniques/T1585) or [Compromise Accounts](https://attack.mitre.org/techniques/T1586)), and/or initial access (ex: [Phishing](https://attack.mitre.org/techniques/T1566) or [Trusted Relationship](https://attack.mitre.org/techniques/T1199)).

Research citing this technique

Reports and advisories from the last 90 days that cite this technique.

2026-10-21 Flare: Measuring Credential Exposure of Contractors and Integrators After the Refrigeration System Attack in France: 601 Industrial Remote Access Addresses Recovered From Stealer Logs, 73% on the Largest Platform Paired With Device Credentials
2026-09-10 Microsoft Threat Intelligence: Protecting organizations from AI-assisted executive impersonation and invoice fraud

Detection coverage

Coverage data unavailable in this snapshot (community inventory not yet ingested).

Signal counts reflect the current corpus snapshot. Research citations are the technique IDs named in vendor reports and government advisories from the last 90 days; KEV mappings come from MITRE CTID. Coverage is the SigmaHQ rule inventory (core, emerging-threats, threat-hunting) plus Elastic and Splunk production rules. Rule bodies are not mirrored; links go upstream.