TACTIC: INITIAL ACCESS

External Remote Services (T1133): Real Cases

MITRE Definition ↗
Adversaries connect to external-facing VPNs, Citrix gateways, and portals using stolen credentials.

Key Facts

Technique ID
T1133
Initial Access
Mapped Cases
1
Primary sources
Related Laws
4
Criminal statutes
  • ATT&CK Technique Identifier: T1133.
  • Tactical Phase: Initial Access.
  • Substantiated in 1 primary court prosecution and advisory cases.
  • Linked records cite judicial dockets, plea agreements, or federal advisories.

Verified Evidentiary Case Records (1)

Devastating ransomware attack and data extortion of Change Healthcare (UnitedHealth Group) that paralyzed medical billing, prescription processing, and healthcare provider reimbursement nationwide.

Primary Source Evidence Excerpt: UnitedHealth Senate Testimony ¶ 5
"Initial entry occurred via an external remote Citrix access gateway lacking multifactor authentication controls."
U.S. District Court for the District of Minnesota · SEC CIK 0000731766 View full case dossier →

Commonly Charged Criminal Statutes