Your Bank Banned LLMs.
Here's How to Safely Bring AI Back.
Most European banks issued a company-wide ban on public LLMs the moment employees started uploading client documents to ChatGPT. The ban was the right call. Now your staff are slower than competitors who found a compliant path forward.
"An analyst pastes a confidential credit memo into ChatGPT to help draft a summary. Another employee uploads a client onboarding form. IT discovers this via outbound traffic analysis. The CISO issues a blanket LLM ban within 24 hours. Now, six months later, those same employees are using personal devices on their phones to avoid the ban — creating a worse security posture than before."
Why the Ban Doesn't Work
Banning LLMs doesn't stop usage. It moves it underground.
Staff bypass corporate controls
Employees use personal phones, home networks, or browser profiles to access ChatGPT when corporate tools are locked. You have less visibility, not more.
Competitive disadvantage
Compliance teams at institutions with governed AI use are processing documents 3–5x faster. Analyst onboarding, credit memos, and regulatory filings are all AI-assisted.
The scope of the ban is wrong
The risk is not "employees using LLMs." The risk is "client data leaving your control." These are solvable independently. A policy engine, not a ban, is the correct solution.
The Actual Compliance Requirements
Four overlapping frameworks. One infrastructure answer.
ICT risk management obligations
The Digital Operational Resilience Act requires documented risk assessment for all third-party ICT tools. Using public LLMs without a governed access layer violates DORA's ICT risk management framework.
Credit scoring and risk assessment
Any AI used in credit decisions, fraud detection, or customer risk scoring is High-Risk under Annex III. This requires audit trails, human oversight, and documented risk management.
Client data cannot leave the EU perimeter
Client financial data processed by US-based LLM providers without a valid transfer mechanism violates GDPR Chapter V. EU data residency is not optional for regulated entities.
Record-keeping for advisory AI
If AI assists in investment advice or suitability assessments, MiFID II's record-keeping obligations apply. ChatGPT conversations are not MiFID-compliant records.
Lift the Ban. Keep the Control.
A compliant AI environment for financial services.
Define which use cases are permitted
Internal document summarization, non-client research, regulatory filing drafts — these carry lower risk than credit decisions. Classify before you permit.
Deploy a policy engine
A deterministic policy engine — not a prompt — decides what data can flow to which AI tool. Client account numbers cannot go to external APIs. Internal research summaries can.
Enforce EU data residency
All AI processing of client data must stay within EU infrastructure. SupraWall's gateway routes all flagged payloads to EU-region endpoints and blocks outbound transfers to non-compliant regions.
Create DORA-compliant audit trails
Every AI tool call — query, input, output, policy decision — is logged immutably. This record serves as your DORA ICT incident documentation and MiFID II record.
Activate the Banking Compliance Template
SupraWall's banking template pre-configures DORA + EU AI Act Annex III requirements. Credit scoring logic is HITL-gated. Client data scrubbing is automatic.
Two Ways to Solve This
Whether you want to implement it yourself or speak to an expert.
Business Path (C-Suite)
For CISOs and Heads of Digital Risk. 30-minute assessment.
Technical Path (Developers)
DORA + EU AI Act Annex III pre-configured.