shieldx/docs/eu-ai-act-compliance.md
Rene Fichtmueller 1c4c034483 feat: ShieldX v0.3.0 — UnicodeScanner (L5), DNS Covert Channel rules, ATLAS v5.4 mappings
- Layer 4 EntropyScanner: Shannon entropy, Base32/Base64 detection, CVE-2025-55284
  ping/nslookup exfil, EchoLeak markdown pattern, DNS tunneling (iodine/dnscat)
- Layer 5 UnicodeScanner: ASCII Smuggling (U+E0000 Tags Block), Variant Selectors,
  Zero-Width steganography, CamoLeak image-ordering (CVE-2025-53773), homoglyphs,
  BiDi override, high-entropy URL params
- 30 DNS covert channel rules (dns-001 to dns-030)
- ATLASMapper: 29 techniques (ATLAS v5.4.0 Feb 2026), added AML.T0062 (Agent Tool
  Invocation), AML.TA0015 (C2 tactic), memory poisoning, multi-agent trust,
  CamoLeak, Unicode steganography mappings
- Rule count: 72 → 102
- Build: tsup 316ms, zero TypeScript errors
2026-03-31 16:32:16 +02:00

13 KiB

EU AI Act Compliance

Overview

ShieldX provides tooling to help organizations comply with the European Union Artificial Intelligence Act (Regulation 2024/1689), specifically the articles relevant to high-risk AI systems that incorporate large language models. ShieldX is not a legal compliance tool -- it is a technical implementation that addresses the measurable, auditable requirements of the regulation.

Enable EU AI Act compliance reporting:

const shield = new ShieldX({
  compliance: { euAiAct: true },
})

This document covers Articles 9, 12, 14, and 15 -- the articles most relevant to LLM security and prompt injection defense.


Article 9: Risk Management System

What the Article Requires

High-risk AI systems must have a risk management system that:

  1. Identifies and analyzes known and reasonably foreseeable risks
  2. Estimates and evaluates risks that may emerge during intended use and reasonably foreseeable misuse
  3. Adopts risk management measures to address identified risks
  4. Tests the system to ensure residual risks are acceptable

How ShieldX Addresses This

Requirement ShieldX Implementation Evidence
Risk identification MITRE ATLAS mapping identifies 44 attack techniques; OWASP LLM Top 10 maps 10 risk categories ComplianceReport.totalTechniques, ComplianceReport.coveredTechniques
Risk estimation Kill chain classification assigns severity levels (none, low, medium, high, critical) per detected threat ShieldXResult.threatLevel, ShieldXResult.killChainPhase
Risk mitigation 10-layer defense pipeline with phase-appropriate healing actions ShieldXResult.action, ShieldXResult.healingApplied
Residual risk documentation Gap analysis identifies uncovered ATLAS techniques ComplianceReport.gaps, ComplianceReport.recommendations
Testing Red Team Engine generates adversarial variants; benchmark suite measures ASR and false positive rate npm run self-test, npm run benchmark

EU AI Act Report Fields

interface EUAIActReport {
  article9RiskManagement: {
    riskIdentification: boolean     // ATLAS + OWASP mapping enabled
    riskMitigation: boolean         // Healing engine active
    residualRisks: string[]         // Uncovered ATLAS techniques
    testingPerformed: boolean       // Red team + benchmark results available
  }
}

Generating a Risk Assessment

The EUAIActReporter module produces a structured report:

const shield = new ShieldX({ compliance: { euAiAct: true } })
await shield.initialize()

// After running the system for a period:
const report = await shield.generateComplianceReport('eu_ai_act')

// report.article9RiskManagement contains:
// - riskIdentification: true (ATLAS mapping active)
// - riskMitigation: true (healing engine active)
// - residualRisks: ['AML.T0003', 'AML.T0004', ...] (techniques not covered)
// - testingPerformed: true/false (based on last red team run)

Article 12: Record-Keeping (Logging)

What the Article Requires

High-risk AI systems must enable automatic recording of events (logs) throughout the system's lifetime. Logging must:

  1. Enable traceability of system functioning
  2. Record events relevant to identifying risks
  3. Maintain logs for an appropriate retention period
  4. Be accessible for monitoring and audit

How ShieldX Addresses This

Requirement ShieldX Implementation Evidence
Automatic event recording Every scan produces a structured ShieldXResult with timestamp, scan ID, scanner results, and actions ShieldXResult.id, ShieldXResult.timestamp
Risk-relevant events All detected threats are logged as IncidentReport with full context IncidentReport.id, IncidentReport.timestamp
Traceability Each scan result links to specific scanner IDs, matched patterns, and kill chain phase ScanResult.scannerId, ScanResult.matchedPatterns
Audit trail Incident reports include ATLAS technique IDs and OWASP risk mappings IncidentReport.atlasMapping, IncidentReport.owaspMapping
Structured logging Pino JSON logging with configurable levels logging.structured: true

Incident Report Structure

Every incident generates a structured report:

interface IncidentReport {
  id: string                          // Unique incident ID
  timestamp: string                   // ISO 8601 timestamp
  sessionId?: string                  // Session identifier (if available)
  userId?: string                     // User identifier (if available)
  threatLevel: ThreatLevel            // none | low | medium | high | critical
  killChainPhase: KillChainPhase      // 7-phase classification
  action: HealingAction               // Action taken
  attackVector: string                // Description of the attack vector
  matchedPatterns: string[]           // Pattern IDs that triggered detection
  inputHash: string                   // SHA-256 hash (never raw input)
  mitigationApplied: string           // Description of mitigation
  falsePositive?: boolean             // Post-hoc feedback
  atlasMapping?: string               // MITRE ATLAS technique ID
  owaspMapping?: string               // OWASP LLM risk ID
}

EU AI Act Report Fields

interface EUAIActReport {
  article12Logging: {
    incidentLogging: boolean    // Incident logging enabled
    auditTrail: boolean         // ATLAS/OWASP mappings in incident reports
    retentionPeriod: string     // Configured retention period
    totalIncidents: number      // Total incidents recorded
  }
}

Privacy Consideration

ShieldX never stores raw user input in logs or incident reports. All input references are SHA-256 hashes. This is compatible with GDPR data minimization requirements while still providing the traceability required by Article 12.


Article 14: Human Oversight

What the Article Requires

High-risk AI systems must be designed to allow effective human oversight, including:

  1. The ability for humans to understand the AI system's capabilities and limitations
  2. The ability to monitor the system's operation
  3. The ability to override or reverse the system's decisions
  4. The ability to intervene or stop the system

How ShieldX Addresses This

Requirement ShieldX Implementation Evidence
Understanding capabilities Full configuration transparency; every scanner and threshold is documented and configurable ShieldXConfig (all fields documented)
Monitoring Structured logging, incident reports, compliance reports, getStats() API LearningStats, ComplianceReport
Override/reverse submitFeedback() API for marking false positives; per-phase healing strategies are configurable shield.submitFeedback(scanId, { isFalsePositive: true })
Intervention All layers independently toggleable; master kill switch via healing.enabled: false; destroy() for clean shutdown Config toggles, shield.destroy()

Human-in-the-Loop Integration

ShieldX supports human-in-the-loop workflows:

  1. Active Learning: The learning engine identifies uncertain samples and surfaces them for human review via the ActiveLearner module. This ensures humans are involved in decisions at the classifier's uncertainty boundary.

  2. Feedback Loop: The submitFeedback() API allows human operators to correct false positives and false negatives. This feedback is processed by the FeedbackProcessor to improve detection accuracy.

  3. Configurable Actions: The healing.phaseStrategies configuration allows operators to set per-phase responses. Setting an action to warn instead of block enables human review before action is taken.

  4. Incident Review: Incident reports are structured for human review, with ATLAS and OWASP mappings providing standardized context.

EU AI Act Report Fields

interface EUAIActReport {
  article14HumanOversight: {
    humanInTheLoop: boolean       // Active learning enabled
    overrideCapability: boolean   // Feedback API available
    feedbackMechanism: boolean    // Feedback processing enabled
  }
}

Article 15: Accuracy, Robustness, and Cybersecurity

What the Article Requires

High-risk AI systems must achieve appropriate levels of:

  1. Accuracy: The system must perform at an appropriate level of accuracy
  2. Robustness: The system must be resilient to errors and inconsistencies
  3. Cybersecurity: The system must be protected against unauthorized access and adversarial attacks

How ShieldX Addresses This

Accuracy

Metric Measurement Method Target
False positive rate Tracked via feedback loop; LearningStats.falsePositiveRate <5%
False negative rate Measured via red team testing; npm run self-test <15% against known patterns
Detection accuracy PINT benchmark, AgentDojo benchmark Published with each release

ShieldX measures accuracy through:

  • Feedback Loop: Every false positive report adjusts the classifier and threshold
  • Red Team Testing: Automated adversarial testing measures the false negative rate
  • Benchmark Suite: Standardized benchmarks (PINT, AgentDojo) provide comparable accuracy metrics

Robustness

Property Implementation
Graceful degradation Every scanner is wrapped in try/catch; Promise.allSettled ensures failing scanners do not block the pipeline
No single point of failure 10 independent layers; any subset can operate alone
Adaptive thresholds ThresholdAdaptor adjusts to changing attack patterns
Drift detection DriftDetector alerts when attack patterns shift

Cybersecurity

Property Implementation
Defense in depth 10 layers, each catching different attack types
Zero trust for data sources TrustTagger assigns per-source trust scores; no data source is trusted by default
Cryptographic integrity SignedPromptVerifier for system prompts; ManifestVerifier for MCP servers
No raw data storage SHA-256 hashes only; raw input never persists
Self-testing Red Team Engine continuously probes for weaknesses
Supply chain verification SupplyChainVerifier and ModelProvenanceChecker

EU AI Act Report Fields

interface EUAIActReport {
  article15Accuracy: {
    falsePositiveRate: number               // Current FP rate
    falseNegativeRate: number               // Current FN rate (from red team)
    benchmarkResults: Record<string, number> // PINT, AgentDojo, etc.
  }
  conformityAssessment: {
    selfAssessment: boolean      // Self-test has been run
    thirdPartyAudit: boolean     // External audit performed
    lastAssessmentDate?: string  // ISO date of last assessment
  }
}

Generating Compliance Reports

Full EU AI Act Report

const shield = new ShieldX({ compliance: { euAiAct: true } })
await shield.initialize()

// After operating the system:
const report = await shield.generateComplianceReport('eu_ai_act')

The report covers all four articles with structured, auditable data.

Combined Report (ATLAS + OWASP + EU AI Act)

const report = await shield.generateComplianceReport('combined')

Periodic Reporting

For continuous compliance, schedule regular report generation:

// Generate weekly compliance reports
setInterval(async () => {
  const report = await shield.generateComplianceReport('eu_ai_act')
  await saveComplianceReport(report) // Your persistence layer
}, 7 * 24 * 60 * 60 * 1000)

Risk Classification

The EU AI Act classifies AI systems by risk level. ShieldX helps determine and document the risk classification:

Risk Category Criteria ShieldX Relevance
Unacceptable risk Manipulative, exploitative, or social scoring systems Out of scope (prohibited uses)
High risk AI in critical infrastructure, education, employment, law enforcement, etc. Full compliance tooling (Articles 9, 12, 14, 15)
Limited risk Chatbots, emotion recognition, deep fakes Transparency obligations; ShieldX provides audit trail
Minimal risk Spam filters, AI-assisted games No specific obligations; ShieldX still provides defense

For high-risk AI systems, ShieldX provides the technical foundation for demonstrating compliance with the mandatory requirements. The compliance reports are designed to be presented to auditors and regulatory bodies as evidence of systematic risk management.


Limitations

ShieldX provides technical tooling for compliance. It does not provide:

  • Legal advice on whether your AI system is classified as high-risk
  • Legal interpretation of EU AI Act articles
  • Representation before regulatory authorities
  • Certification or conformity marking

Organizations should consult legal counsel to determine their specific obligations under the EU AI Act and use ShieldX's compliance reports as technical evidence within their broader compliance strategy.