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Discover AI Model Ontology - AI Security Technique

AI Security Technique

Adversaries may discover the ontology of an AI model's output space, for example, the types of objects a model can detect. The adversary may discovery the ontology by repeated queries to the model, forcing it to enumerate its output space. Or the ontology may be discovered in a configuration file or in documentation about the model. The model ontology helps the adversary understand how the model is being used by t...

Overview

A source-backed snapshot of this AI security technique.

Adversaries may discover the ontology of an AI model's output space, for example, the types of objects a model can detect. The adversary may discovery the ontology by repeated queries to the model, forcing it to enumerate its output space. Or the ontology may be discovered in a configuration file or in documentation about the model.

The model ontology helps the adversary understand how the model is being used by the victim. It is useful to the adversary in creating targeted attacks.

Tactics1Attacker goals connected to this method.
Mitigations2Defenses that may help against this attack.
AI risks0Research-backed risks connected to this topic.

Technique details

Identifiers, maturity, and source taxonomy for this technique.

ATLAS ID
AML.T0013
Maturity
demonstrated
Priority score
36
ATLAS tactics
Discovery

Attack flow

How to read the public records connected to this technique.

1. TechniqueRead the ATLAS description and evidence level.
2. TacticsSee which attacker goals this method supports.
3. ExamplesCheck whether public case studies mention it.
4. DefensesReview safeguards mapped by ATLAS.
5. SourcesOpen the original public records and references.

Impact

Why this technique may deserve attention in the current dataset.

  • Evidence leveldemonstrated
  • Mapped defenses2 ATLAS mitigation records
  • Public examples1 linked case study records
  • Research risks0 related MIT AI Risk records above the confidence threshold
  • Vulnerabilities0 linked CVE records

Mitigations

Defenses that may help against this attack.

AML.M0002 - Passive AI Output Obfuscation

Suggested approaches:

  • Restrict the number of results shown
  • Limit specificity of output class ontology
  • Use randomized smoothing techniques
  • Reduce the precision of numerical outputs
LifecycleDeployment + 1 moreCategoryTechnical - ML
DeploymentML Model Evaluation

AML.M0004 - Restrict Number of AI Model Queries

Limit the amount of information an attacker can learn about a model's ontology through API queries.

LifecycleBusiness and Data Understanding + 2 moreCategoryTechnical - Cyber
B&D UnderstandingDeployment+1 more

Case studies

Examples from public reports and exercises.

Face Identification System Evasion via Physical Countermeasures

MITRE's AI Red Team demonstrated a physical-domain evasion attack on a commercial face identification service with the intention of inducing a targeted misclassification. This operation had a combination of traditional MITRE ATT&CK techniques such as finding valid accounts and executing code via an API - all interleaved with adversarial ML specific attacks.

Date2020-01-01
exercise

Source evidence

Original public records and references for this page.