110 incidents on record · 2026 Headlights Incident reports by Ellie Harris · Melbourne
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HD-INC-104
Technology · United States · 2024 · Data used for AI training without clear consent

LinkedIn began using members' data to train AI by default, and paused it for the UK and Europe after the privacy regulator stepped in

By Ellie Harris · Filed Privacy policy change effective 18 September 2024

Alleged: LinkedIn (Microsoft) developed or deployed the AI system implicated in this incident. Details are drawn from public reports; parties are presumed innocent of any wrongdoing not established by an official finding.

LinkedIn began using members' data to train AI by default, and paused it for the UK and Europe after the privacy regulator stepped in

What happened

It was reported that on 18 September 2024 LinkedIn, owned by Microsoft, updated its privacy policy to allow members’ data to be used to train its generative AI features, and that the setting enabling this had been switched on for users by default rather than requiring them to opt in. Digital-rights advocates and users criticised the move, arguing that people had been enrolled into AI training without being clearly asked. The company said the data would improve its AI features and that members could opt out through a setting.

The United Kingdom’s Information Commissioner’s Office raised concerns about LinkedIn’s approach to training generative AI on UK users’ data. Within days LinkedIn said it had stopped training its generative AI models on data from members in the United Kingdom, the European Economic Area and Switzerland, and would not offer the setting to members in those regions until further notice. In other regions, including the United States, the default remained in place unless a member turned it off.

What an auditable version would have shown

Whether data can be used to train AI turns on a clear legal basis, most often consent, and that basis is exactly the kind of thing that should be recorded rather than assumed. An auditable version keeps, for each member, the basis on which their data is being used: whether they were asked, what they were told, whether they agreed or were defaulted in, and when they changed the setting. With that record, the question the regulator asked, were people properly asked before their data was used, has an answer on file, and a member can see and prove what they did or did not agree to.

Where the gap was

Members’ data was put to a new use, training AI, before many of them knew it was happening, and the default did the deciding for them. An EgressGate governs personal data leaving its original purpose for a new one such as model training, and requires a valid, recorded basis before it can, so data is not repurposed by a quiet default. A ConductRecord keeps the account of each member’s consent state over time, so the platform can show, and the member can check, what was agreed and when. The gap was not that LinkedIn built AI features, but that a consequential use of personal data was switched on without a clear, recorded choice by the people it belonged to.

What governance should have looked like

When a company changes what it does with people’s data, the honest default is to ask, not to assume, and to keep a record of what each person actually agreed to. Opt-out by quiet policy update puts the burden on the user to notice and object, which regulators have repeatedly found is not valid consent under GDPR-style rules. The lesson is that the legitimacy of AI training rests on a recorded basis for using the data, and “you were opted in unless you found the setting” is not that.

Failure Pattern: personal data was repurposed to train AI by a default setting, without a clear, recorded consent from the people it belonged to.

Governance Principle: before personal data is used to train AI, there should be a valid, recorded basis for that use, and each person should be able to see and prove what they agreed to.

The reference implementation of EgressGate and ConductRecord is open source. It lives at github.com/saffronandindia/headlights-oss, Apache 2.0 licensed and free to install. The repository is public now.

Sources

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The record

An auditable system would have produced a signed, tamper-evident record the moment this happened: what the system did, the version that did it, the basis it acted on, and the action taken, and LinkedIn (Microsoft) could have produced it on demand.

This is the record the system as deployed did not produce in a signed, auditable form.

What this teaches
Capture what happened when it happens
What the system did, the version that did it, the basis it acted on, and the action taken, recorded at the moment, not reconstructed after.
Sign it, so no one has to trust the record-keeper
A tamper-evident entry. Edit it later and the signature breaks. The record does not ask for the benefit of the doubt.
Make it verifiable by anyone
A court, a regulator, a customer's lawyer can check the record themselves, without taking the company, or us, at our word.

Headlights summarises publicly reported AI incidents. All summaries are independently written, attributed to their original sources, and intended for research and educational purposes. Allegations are identified as such until established through official findings.

Last reviewed June 2026. This report is based on the sources listed above and reflects information available at the time of review; later developments may not be captured. Where a person is described as charged with or alleged to have done something, that allegation is unproven unless a conviction or a court or regulatory finding is stated. Headlights publishes journalism and commentary, not legal advice.

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