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Bidda Sovereign Intelligence · 10,065 Verified Nodes · 39 Sovereign Pillars

MITRE ATT&CK T1566.004: Spearphishing Voice (Enterprise Tactic TA0001 - Initial Access)

MITRE ATT&CK T1566.004 (Spearphishing Voice) is an Enterprise Initial Access sub-technique of T1566 (Phishing). Adversaries may use voice communications…

Compliance Node Overview

MITRE ATT&CK T1566.004 (Spearphishing Voice) is an Enterprise Initial Access sub-technique of T1566 (Phishing). Adversaries may use voice communications to ultimately gain access to victim systems. Spearphishing voice is a specific variant of spearphishing. It is different from other forms of spearphishing in that is employs the use of manipulating a user into providing access to systems through a phone call or other forms of voice communications. Affected platforms: Linux, macOS, Windows, Identity Provider. MITRE-documented mitigations include M1017 User Training. The Center for Threat-Informed Defense maps this technique to NIST SP 800-53 Rev 5 controls AC-04, CA-07, CM-02, CM-06, IA-09, RA-05, SC-07, SC-20.

Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated: 2026-05-25

Primary source: https://attack.mitre.org/techniques/T1566/004/

SHA-256 integrity: fca18e8cbd61b1c3ebd92df1431bd36b072be7715f56aefb4a260442cf94d0b6

Primary Citations — 7 traced to source

MITRE ATT&CK Technique T1566.004: Spearphishing Voice (https://attack.mitre.org/techniques/T1566/004/)
MITRE ATT&CK Tactic TA0001: Initial Access (https://attack.mitre.org/tactics/TA0001/)

+ 5 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.

Access

Discovery (free): /api/v1/nodes/mitre-attack-t1566-004-spearphishing-voice.json — 6-field metadata
Vault (full node): /api/v1/vault/nodes/mitre-attack-t1566-004-spearphishing-voice.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
Canonical URL: https://bidda.com/intelligence/mitre-attack-t1566-004-spearphishing-voice
Back to registry: Browse all 10,065 compliance nodes

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