By 2029, most privacy incidents will result not from the direct exposure of personally identifiable information (PII), but from AI-generated inferences about individuals, according to Gartner, Inc., a business and technology insights company.

“There is a fundamental shift underway from data exposure to insight exposure,” said Bart Willemsen, VP Analyst at Gartner. “Organizations have historically focused on protecting raw personal data, but AI can now reconstruct deeply personal insights without ever breaching traditional data controls. Privacy risks are increasingly emerging from what AI algorithms infer about individuals rather than what data is directly exposed.”

As organizations reduce the amount of personal data they store due to regulatory and cost pressures, threat actors’ access to AI now lets them perform inference-based attacks. Advances in GenAI and machine learning (ML) are enabling the extraction of sensitive attributes, such as health conditions or behavioral patterns, from seemingly innocuous, anonymized or aggregated data.

Inference-Based Risks Are Reshaping Privacy Strategies

“Inference attacks are particularly dangerous because they often evade conventional detection mechanisms,” said Willemsen. “Individuals can be exposed through AI-generated conclusions rather than leaked records, creating privacy risks that undermine data integrity and are difficult to detect, explain and mitigate.”

This shift is forcing organizations to rethink privacy strategies. Beyond protecting personal data, security leaders must govern how AI systems generate, use and act on insights about individuals.

Gartner expects spending on data integrity protections to reach parity with data confidentiality investments by 2028 as organizations respond to the risks of inaccurate, biased, or unauthorized AI-generated profiles.

“Organizations that continue to treat privacy solely as a data protection challenge will be increasingly vulnerable to privacy incidents driven by AI-generated inferences,” said Willemsen. “The next frontier of privacy risk lies in how AI interprets data, not simply how organizations store it.”

Preparing Privacy Programs for Inference-Based Risks

To address emerging inference-based privacy risks, Gartner recommends that CISOs and privacy leaders:

• Embed AI Governance Into Privacy Programs: Integrate privacy-by-design principles into AI development and deployment processes and regularly assess algorithms for bias, overfitting and unintended inference risks.
• Adopt Privacy-Enhancing Technologies (PETs): Implement technologies such as differential privacy, synthetic data and privacy-aware machine learning to process data in a protected state and reduce reidentification risks.
• Strengthen Data Minimization and Lifecycle Controls: Limit data collection to essential business needs and ensure strict access control and timely deletion of data to reduce the information available for inference-based attacks.
• Enhance Cybersecurity for AI-Driven Threats: Invest in advanced monitoring, anomaly detection and scenario-planning capabilities designed to identify indirect exploitation patterns and inference-based threats.
• Foster Transparency and Human Oversight: Document where AI systems should not infer and where they should, conduct regular audits, and mandate a human in the loop to validate AI-generated inferences before taking action on sensitive data.