Mobile Exfiltration consists of techniques adversaries use to steal data from compromised mobile devices. Mobile devices present unique exfiltration challenges and opportunities due to always-on connectivity, data caps, and the ability to exfiltrate via cellular networks that bypass enterprise monitoring.
Tactic Overview
Tactic ID: TA0036 — Matrix: Mobile — Techniques: 2
The Exfiltration tactic represents a phase in the adversary lifecycle where the adversary is trying to steal data. This tactic is part of the MITRE ATT&CK Mobile matrix and encompasses 2 known techniques that adversaries employ during this phase of an attack.
Understanding this tactic is critical for defenders to build effective detection strategies and implement appropriate countermeasures. Organizations should map their security controls against each technique to identify coverage gaps and prioritize defensive investments.
Techniques (2)
The following techniques are categorized under the Exfiltration tactic in the MITRE ATT&CK Mobile matrix:
| Technique ID | Name | Description | MITRE Reference |
|---|---|---|---|
T1639 | Exfiltration Over Alternative Protocol (1 sub-techniques) | Adversaries exfiltrate data from mobile devices over alternative protocols like SMS or Bluetooth. | T1639 |
T1646 | Exfiltration Over C2 Channel | Adversaries exfiltrate collected mobile data over the established C2 channel. | T1646 |
Detection & Mitigation
Organizations should implement layered defenses addressing each technique within this tactic. Below are key mitigation strategies recommended by Mjolnir Security analysts.
Key Mitigations
- Network monitoring
- Data loss prevention
- VPN enforcement
- Cellular traffic monitoring
Detection Strategies
Effective detection of Exfiltration techniques requires a combination of log analysis, behavioral monitoring, and threat intelligence correlation. Security teams should focus on establishing baselines for normal activity and alerting on deviations that may indicate adversary behavior aligned with this tactic.
- SIEM Integration: Correlate events across multiple data sources to detect technique patterns
- Behavioral Analytics: Deploy UEBA solutions to identify anomalous activity indicative of this tactic
- Threat Hunting: Proactively search for indicators of techniques within this tactic using hypothesis-driven investigations
- Purple Teaming: Regularly test detection coverage by simulating techniques from this tactic
Associated Threat Actors
The following threat actors are known to heavily leverage techniques from the Exfiltration tactic:
For comprehensive threat actor profiles, visit the APT Groups Hub.
Resources & References
Defend Against Exfiltration Techniques
Mjolnir Security provides expert threat intelligence, purple team exercises, and detection engineering services to help organizations defend against adversary tactics mapped to the MITRE ATT&CK framework.
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View All Reports →Written by Mjolnir Security Research — Published March 7, 2026