Compliance Node Overview
MITRE ATT&CK T0803 (Block Command Message) is an ATT&CK for ICS Inhibit Response Function technique. Adversaries may block a command message from reaching its intended target to prevent command execution. In OT networks, command messages are sent to provide instructions to control system devices. A blocked command message can inhibit response functions from correcting a disruption or unsafe condition. Affected asset classes: None. MITRE-documented mitigations include M0810 Out-of-Band Communications Channel, M0807 Network Allowlists, M0814 Static Network Configuration. Operational-technology controls map to NIST SP 800-82 Rev 3 and the IEC/ISA 62443 series.
Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated:
Primary source: https://attack.mitre.org/versions/v16/techniques/T0803/
SHA-256 integrity: ee533bdd3e99a351ea5985b10fb4e92fb6cf630d3a60a2ed12a8a92882183575
Primary Citations — 7 traced to source
- MITRE ATT&CK for ICS Technique T0803: Block Command Message (https://attack.mitre.org/versions/v16/techniques/T0803/)
- MITRE ATT&CK ICS Tactic TA0107: Inhibit Response Function (https://attack.mitre.org/tactics/TA0107/)
+ 5 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.
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