MITRE ATLAS 2026.09 / technique reference
AML.T0069.000
Special Character Sets
MITRE source definition
Adversaries may discover delimiters and special characters sets used by the large language model. For example, delimiters used in retrieval augmented generation applications to differentiate between context and user prompts. These can later be exploited to confuse or manipulate the large language model into misbehaving.
Source modified 2026-05-27. Reproduced from the pinned ATLAS release; inline technique links resolve to local reference pages.
Parent, sub-techniques and ATT&CK references
Source-backed defensive context
MITRE mitigations
- AML.M0005 Control Access to AI Models and Data at Rest
- AML.M0019 Control Access to AI Models and Data in Production
- AML.M0020 Generative AI Guardrails
MITRE case studies
- AML.CS0026 Financial Transaction Hijacking with M365 Copilot as an Insider · Exercise
- AML.CS0051 OpenClaw Command & Control via Prompt Injection · Exercise
These are explicit source relationships, not independently reproduced incidents or validated detection coverage.
Simulation and telemetry boundary
This is a technique reference page, not a runnable simulation. No ATLAS-specific telemetry mapping, local attack execution or detector validation is asserted. MITRE maturity describes its source evidence, not a 1200km lab result.
For broader context—not technique-specific control mappings—see AI Security, AI Security Course, and detection-validation methodology.
Provenance and attribution
Immutable MITRE ATLAS source · Import provenance · Attribution and transformation notice · Apache License 2.0
Copyright 2021-2026 MITRE. Source text and explicit relationships are retained; navigation, formatting and local links are provided by 1200km.
No explicit relationship in this pinned source.