Do AI Agents Overshare Your Data Online?

Mar 16, 2026

This week’s issue looks at the privacy implications of agentic AI, from oversharing personal data to prompt injection attacks and unclear compliance boundaries. We’ll explore what’s driving these risks and how researchers, regulators, and engineers are beginning to respond.

One YouTube Video

In this video, President of the Signal Foundation, Meredith Whittaker, explains why agentic AI systems may introduce new privacy risks. As they gain access to calendars, messages, and other tools to complete tasks, they could bypass traditional protections and expand the amount of personal data sent to the cloud.

One Study

Researchers from Brave Software ran 180 agentic shopping tasks across Amazon and eBay to test how agents handle user data. The result: agents overshared in every configuration—not just through what they typed, but through how they behaved. Prompt-level privacy instructions didn’t help. In some cases, they made it worse

One Infographic

Source: Brave

One Interview

In this interesting conversation, Dan Boneh, a renowned Stanford cryptographer, speaks with Nicholas Carlini, a leading AI security researcher at Anthropic, about the evolving field of AI security. They discuss how adversarial attacks, data leakage, and prompt injections expose data.

One Whitepaper

In this paper, Google outlines the security challenges of AI agents. It proposes a defense-in-depth approach that combines traditional security controls with AI-based safeguards to keep increasingly autonomous systems aligned with user intent.

One Gif

Source: Medium