Prohibited AI Practices under Article 5: A Developer's Guide to Boundary Isolation

Article 5 of the EU AI Act bans subliminal manipulation, social scoring, and untargeted scraping. Learn how to build boundary isolation filters.

Enforcing Article 5 Bans at the API Gateway

Article 5 defines unacceptable-risk AI practices that are banned outright in the European Union. These include systems that deploy subliminal techniques, exploit vulnerabilities of specific groups, or conduct untargeted facial recognition scraping.

Developers building autonomous agents must guarantee that their prompt streams and tool-calling functions cannot be hijacked to perform prohibited practices. ATL-Trust screens outbound tool requests against strict behavioral manifests.

// Blocking prohibited practice categories
if manifest.prohibited_categories.contains(&intent.category) {
    return Err(ComplianceError::ProhibitedPracticeBreach);
}

Behavioral Manifest Enforcement

If an agent is tricked via prompt injection into attempting unauthorized scraping or biometric data collection, the manifest ruleset blocks the call immediately.

This zero-trust boundary prevents accidental regulatory violations and shields the enterprise from catastrophic legal liabilities.

• Intercepts and blocks banned AI practices at the boundary.
• Prevents prompt injections from initiating unauthorized scraping.
• Ensures strict compliance with Article 5 mandates.