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Network Device Authentication

Subtechnique · ATTACK:enterprise:T1556.004

Attributed source ↗ · Plaintext record · Complete record and assertions JSON

Inspect structured metadata and provenance
{
  "id": "ATTACK:enterprise:T1556.004",
  "title": "Network Device Authentication",
  "type": "Subtechnique",
  "source_url": "https://attack.mitre.org/techniques/T1556/004",
  "snapshot": "enterprise-attack-20.0.json",
  "status": "active",
  "rights": "Source metadata only; source notices retained; no operational prose or payloads",
  "review_status": "machine-extracted; source-specific checks passed, editorial review pending",
  "stix_id": "attack-pattern--fa44a152-ac48-441e-a524-dd7b04b8adcd",
  "external_id": "T1556.004",
  "domain": "enterprise",
  "created": "2020-10-19T17:58:04.155Z",
  "modified": "2026-05-12T15:12:00.726Z",
  "version": "3.0",
  "aliases": [

  ],
  "tactics": [
    "defense-impairment",
    "persistence",
    "credential-access"
  ],
  "source_references": [
    {
      "source_name": "Mandiant - Synful Knock",
      "url": "https://cloud.google.com/blog/topics/threat-intelligence/synful-knock-acis/"
    }
  ]
}

Explicit source assertions (6)

First 80 shown here; the complete set is in this record’s JSON and plaintext. Each relationship retains its source and locator. No inferred relationships are added.

ATTACK:enterprise:S1104 → uses → ATTACK:enterprise:T1556.004

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--0117960a-178b-41f8-b7c1-5a4852be582a

Mandiant Pulse Secure Zero-Day April 2021

ATTACK:enterprise:T1556.004 → subtechnique-of → ATTACK:enterprise:T1556

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--09bb741d-4f8b-4ae5-95f7-38d85e4d825a

ATTACK:enterprise:M1026 → mitigates → ATTACK:enterprise:T1556.004

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--bb1aff02-36e4-402e-9bd0-23bfd588e4ab

ATTACK:enterprise:S0519 → uses → ATTACK:enterprise:T1556.004

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--d3eec81c-8d8d-486d-919b-dc63a12555df

Mandiant - Synful Knock

ATTACK:enterprise:M1032 → mitigates → ATTACK:enterprise:T1556.004

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--fa8d6c79-557f-44e1-a27b-55f87b2c8084

Cisco IOS Software Integrity Assurance - TACACS

ATTACK:enterprise:S9013 → uses → ATTACK:enterprise:T1556.004

MITRE ATT&CK: Source assertion; no new actor identity, alias equivalence, CVE exploitation or causal inference. Procedure prose omitted.

Assertion source · Locator: relationship--fb6cf7ca-c649-4ca9-95aa-577cf9018c19

Google UNC5221 Ivanti January 2025

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