Building Privacy into AI: The Strategic Case for Advanced PII Detection

Patricia Thaine
Oct 14, 2025
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As our world becomes increasingly data-driven, ensuring the privacy and security of Personally Identifiable Information (PII) has become an absolute necessity, not a luxury. Our comprehensive analysis in "The Hidden PII Detection Crisis" and performance benchmarks in "The Specialization Gap: Purpose-Built vs. General Market PII Detection Solutions (Benchmark Results)" demonstrate that traditional, regex-based, open-source PII, and general market PII detection methods have limitations that often result in inaccurate detection and hamper the protection of personal, sensitive, and confidential data.

Beyond Basic Detection: The Complete Privacy Platform

Private AI provides a single API that can simultaneously identify and redact PII, PHI, and PCI data across 50+ languages in text, audio, images, and documents. Other solutions will do detection only, but redaction is left up to the developer, making the total solution much more complex to implement and administer. Additionally, most other services have separate API endpoints for PII, PHI, and PCI, causing organizations to incur further costs and potentially miss important detections in datatypes they had not considered during the initial implementation.

The Synthetic PII Innovation

Private AI can also generate synthetic PII to replace any PII in the input data. The synthetic PII generation system leverages proprietary generative models, resulting in replacement entities that fit the surrounding context. This method has numerous benefits, including:

  1. Eliminating negative impacts on downstream model training for various tasks (e.g., sentiment analysis, named entity recognition).
  2. Decreasing re-identification risk: if any personal data are missed, it's very difficult to distinguish between the original data and the synthetic data. This is the concept of “hidden in plain sight” that is often used in HIPAA-compliant de-identification processes.

This capability is crucial because, by making it easy for organizations to incorporate privacy into AI, we ensure that businesses are better equipped to manage personal data, avoid potential legal and financial fallout, and retain the trust of their clientele. The risk may grow exponentially as AI models are trained unknowingly on PII and are then propagated across business units and customer-facing products.

GDPR Sensitive Data Compliance

The GDPR has a category of personal data, known as sensitive data, which has stricter regulations on processing it. Sensitive data includes information such as a person's "racial or ethnic origin, political opinions, religious or philosophical beliefs, or trade union membership, and the processing of genetic data, biometric data, data concerning health, or data concerning a natural person's sex life or sexual orientation" (Art. 9, GDPR).

Unlike Private AI, none of the competitors reviewed in this report have entity types for POLITICAL AFFILIATION, RELIGION, or LANGUAGE. Often, an individual's spoken language(s) indicate their ethnic origin. Sexual orientation terms are only redacted by AWS's supplementary medical redaction service, Google redacts only gender terms, and Azure does not support either category.

The Customer-Driven Approach

One way we ensure that our performance continues to improve is by working on domain-specific tasks and datasets. This is essential given the complex challenges we identified in "Healthcare and Medical Data: The Ultimate PII Detection Challenge" and "Contact Centers, Chat, and Email: PII Detection in Customer Communications." We do this by actively engaging with our customers and incorporating their feedback. By listening to their needs and understanding their particular use cases, we can refine and improve our datasets continuously.

With our continual customer engagement and feedback to improve our datasets, we stand committed to refining the process and making it more adaptable to your unique contexts. Note that any data our customers choose to send us is hand-picked by them and must be de-identified before we receive them. We do not have the ability to see the data our customers process using our products and only collect usage statistics.

The Cultural Shift: Privacy as Ethical Foundation

Our AI-based PII detection product is a crucial ally for businesses to innovate while upholding commitments to users' trust and privacy. This goes beyond just avoiding data breach risks. It spearheads a cultural change in data management where respect for individual privacy is a cornerstone of ethical business practices.

In stark contrast to the performance gaps documented in "The Specialization Gap: Purpose-Built vs. General Market PII Detection Solutions (Benchmark Results)," this study demonstrates our product's superior accuracy, flexibility of deployment, and scalability even in complex, specialized contexts. Whether the text originated from emails, call transcripts, medical data, or chat logs, our models have consistently showcased enhanced performance compared to traditional and even other AI-based competitors.

The Strategic Imperative

Using the methodology detailed in "How to Properly Benchmark PII Detection Solutions," our comprehensive testing across generic and domain-specific data types reveals why specialized, purpose-built PII detection solutions deliver fundamentally different results than general-purpose market alternatives. The performance gaps we documented, where specialized detection achieves 94-99% recall while general market solutions miss 15-46% of PII entities, represent more than technical metrics. They reflect the difference between six years of focused development on PII challenges versus broad-purpose tools adapted for privacy tasks.

The implications extend beyond individual use cases. As demonstrated in "Healthcare and Medical Data: The Ultimate PII Detection Challenge" and "Contact Centers, Chat, and Email: PII Detection in Customer Communications," modern enterprises operate across multiple domains simultaneously, with medical records, customer service transcripts, financial emails, and compliance documentation among them. Each context presents unique challenges that require deep understanding of domain-specific terminology, regulatory requirements, and data patterns. General-purpose solutions cannot match the depth of specialization needed to protect sensitive information across these varied environments.

The Future Vision

Specialized PII detection is an invaluable foundation as businesses navigate an increasingly data-dependent world. This transition need not be a leap of faith but a well-calculated, secure stride into the future. Purpose-built PII detection is poised to be an indispensable pillar in not just a business's data protection strategy but its entire ethical framework.

After all, privacy is not just about staying safe. It's about doing what's right. And about maintaining trust.

Building Privacy into AI: The Strategic Case for Advanced PII Detection

Contact Centers, Chat, and Email: PII Detection in Customer Communications

Healthcare and Medical Data: The Ultimate PII Detection Challenge

The Specialization Gap: Purpose-Built vs. General Market PII Detection Solutions (Benchmark Results)

How to Properly Benchmark PII Detection Solutions: A Research-Based Methodology

The Hidden PII Detection Crisis: Why Traditional Methods Are Failing Your Business

Data Left Behind: AI Scribes’ Promises in Healthcare

Data Left Behind: Healthcare’s Untapped Goldmine

The Future of Health Data: How New Tech is Changing the Game

Why is linguistics essential when dealing with healthcare data?

Why Health Data Strategies Fail Before They Start

Private AI to Redefine Enterprise Data Privacy and Compliance with NVIDIA

EDPB’s Pseudonymization Guideline and the Challenge of Unstructured Data

HHS’ proposed HIPAA Amendment to Strengthen Cybersecurity in Healthcare and how Private AI can Support Compliance

Japan's Health Data Anonymization Act: Enabling Large-Scale Health Research

What the International AI Safety Report 2025 has to say about Privacy Risks from General Purpose AI

Private AI 4.0: Your Data’s Potential, Protected and Unlocked

How Private AI Facilitates GDPR Compliance for AI Models: Insights from the EDPB's Latest Opinion

Navigating the New Frontier of Data Privacy: Protecting Confidential Company Information in the Age of AI

Belgium’s Data Protection Authority on the Interplay of the EU AI Act and the GDPR

Enhancing Compliance with US Privacy Regulations for the Insurance Industry Using Private AI

Navigating Compliance with Quebec’s Act Respecting Health and Social Services Information Through Private AI’s De-identification Technology

Unlocking New Levels of Accuracy in Privacy-Preserving AI with Co-Reference Resolution

Strengthened Data Protection Enforcement on the Horizon in Japan

How Private AI Can Help to Comply with Thailand's PDPA

How Private AI Can Help Financial Institutions Comply with OSFI Guidelines

The American Privacy Rights Act – The Next Generation of Privacy Laws

How Private AI Can Help with Compliance under China’s Personal Information Protection Law (PIPL)

PII Redaction for Reviews Data: Ensuring Privacy Compliance when Using Review APIs

Independent Review Certifies Private AI’s PII Identification Model as Secure and Reliable

To Use or Not to Use AI: A Delicate Balance Between Productivity and Privacy

News from NIST: Dioptra, AI Risk Management Framework (AI RMF) Generative AI Profile, and How PII Identification and Redaction can Support Suggested Best Practices

Handling Personal Information by Financial Institutions in Japan – The Strict Requirements of the FSA Guidelines

日本における金融機関の個人情報の取り扱い - 金融庁ガイドラインの要件

Leveraging Private AI to Meet the EDPB’s AI Audit Checklist for GDPR-Compliant AI Systems

Who is Responsible for Protecting PII?

How Private AI can help the Public Sector to Comply with the Strengthening Cyber Security and Building Trust in the Public Sector Act, 2024

A Comparison of the Approaches to Generative AI in Japan and China

Updated OECD AI Principles to keep up with novel and increased risks from general purpose and generative AI

Is Consent Required for Processing Personal Data via LLMs?

The evolving landscape of data privacy legislation in healthcare in Germany

The CIO’s and CISO’s Guide for Proactive Reporting and DLP with Private AI and Elastic

The Evolving Landscape of Health Data Protection Laws in the United States

Comparing Privacy and Safety Concerns Around Llama 2, GPT4, and Gemini

How to Safely Redact PII from Segment Events using Destination Insert Functions and Private AI API

WHO’s AI Ethics and Governance Guidance for Large Multi-Modal Models operating in the Health Sector – Data Protection Considerations

How to Protect Confidential Corporate Information in the ChatGPT Era

Unlocking the Power of Retrieval Augmented Generation with Added Privacy: A Comprehensive Guide

Leveraging ChatGPT and other AI Tools for Legal Services

Leveraging ChatGPT and other AI tools for HR

Leveraging ChatGPT in the Banking Industry

Law 25 and Data Transfers Outside of Quebec

The Colorado and Connecticut Data Privacy Acts

Unlocking Compliance with the Japanese Data Privacy Act (APPI) using Private AI

Tokenization and Its Benefits for Data Protection

Private AI Launches Cloud API to Streamline Data Privacy

Processing of Special Categories of Data in Germany

End-to-end Privacy Management

Privacy Breach Reporting Requirements under Law25

Migrating Your Privacy Workflows from Amazon Comprehend to Private AI

A Comparison of the Approaches to Generative AI in the US and EU

Benefits of AI in Healthcare and Data Sources (Part 1)

Privacy Attacks against Data and AI Models (Part 3)

Risks of Noncompliance and Challenges around Privacy-Preserving Techniques (Part 2)

Enhancing Data Lake Security: A Guide to PII Scanning in S3 buckets

The Costs of a Data Breach in the Healthcare Sector and its Privacy Compliance Implications

Navigating GDPR Compliance in the Life Cycle of LLM-Based Solutions

What’s New in Version 3.8

How to Protect Your Business from Data Leaks: Lessons from Toyota and the Department of Home Affairs

New York's Acceptable Use of AI Policy: A Focus on Privacy Obligations

Safeguarding Personal Data in Sentiment Analysis: A Guide to PII Anonymization

Changes to South Korea’s Personal Information Protection Act to Take Effect on March 15, 2024

Australia’s Plan to Regulate High-Risk AI

How Private AI can help comply with the EU AI Act

Comment la Loi 25 Impacte l'Utilisation de ChatGPT et de l'IA en Général

Endgültiger Entwurf des Gesetzes über Künstliche Intelligenz – Datenschutzpflichten der KI-Modelle mit Allgemeinem Verwendungszweck

How Law25 Impacts the Use of ChatGPT and AI in General

Is Salesforce Law25 Compliant?

Creating De-Identified Embeddings

Exciting Updates in 3.7

EU AI Act Final Draft – Obligations of General-Purpose AI Systems relating to Data Privacy

FTC Privacy Enforcement Actions Against AI Companies

The CCPA, CPRA, and California's Evolving Data Protection Landscape

HIPAA Compliance – Expert Determination Aided by Private AI

Private AI Software As a Service Agreement

EU's Review of Canada's Data Protection Adequacy: Implications for Ongoing Privacy Reform

Acceptable Use Policy

ISO/IEC 42001: A New Standard for Ethical and Responsible AI Management

Reviewing OpenAI's 31st Jan 2024 Privacy and Business Terms Updates

Comparing OpenAI vs. Azure OpenAI Services

Quebec’s Draft Regulation Respecting the Anonymization of Personal Information

Version 3.6 Release: Enhanced Streaming, Auto Model Selection, and More in Our Data Privacy Platform

Brazil's LGPD: Anonymization, Pseudonymization, and Access Requests

LGPD do Brasil: Anonimização, Pseudonimização e Solicitações de Acesso à Informação

Canada’s Principles for Responsible, Trustworthy and Privacy-Protective Generative AI Technologies and How to Comply Using Private AI

Private AI Named One of The Most Innovative RegTech Companies by RegTech100

Data Integrity, Data Security, and the New NIST Cybersecurity Framework

Safeguarding Privacy with Commercial LLMs

Cybersecurity in the Public Sector: Protecting Vital Services

Privacy Impact Assessment (PIA) Requirements under Law25