FS chatbot hits 99.3% PII detection across jurisdictions

Overview

A financial-services chatbot that leaks a customer's account number once becomes a regulator's problem twice.

A global financial services enterprise running customer-facing AI needed safety guarantees on PII handling, prompt-injection resistance, and harmful-output prevention ” at the rates regulators and brand teams measure against.

Firstsource built and ran the safety pipeline ” PII labeling across financial, medical, and personal data categories; prompt-injection adversarial testing; multi-jurisdictional coverage across US, EU, UK, and APAC.

This was Intelligence that Operates: safety annotation built into the chatbot's deployment lifecycle, not bolted onto its release.

Challenges

• PII recall is a regulator-aligned metric, not an engineering target. Sub-99% PII detection rates expose the operator to regulatory action and customer breach. The threshold for shipping is set by HIPAA-equivalent, GDPR, and jurisdictional rules.
• Prompt-injection resistance can't be tested with a sample. A safety pipeline that catches 95% of injection attempts is the same as one that catches 5% if the attacker iterates. The adversarial library has to be comprehensive.
• Harmful-output prevention in financial advice is a content problem. Unsolicited high-risk advice ” like 'invest all your savings in crypto' ” needs to be flagged and rewritten with regulatory disclaimers, not just suppressed.

How We Made It Happen

We ran the safety pipeline as one program across PII detection, injection resistance, and harmful-output prevention.

• PII types annotated across financial, medical, and personal data. Coverage built for the categories that actually appear in financial chatbot traffic.
• Red Teaming via prompt-injection attempts and jailbreaks across the full scope of social-engineering and instruction-override attacks.
• Multi-jurisdictional safety taxonomy. PII definitions, financial-harm rubrics, and safe-harbor rules annotated for US, EU, UK, and APAC ” single safety pipeline, regional compliance discipline.

Conclusion

Financial chatbots only ship when their safety pipeline outperforms the customer's expectations and the regulator's. Firstsource ran that pipeline end-to-end across PII, injection, and harmful-output prevention ” turning chatbot safety into Intelligence that Operates.