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AI startup sues ex-CEO, saying he took 41GB of email and lied on résumé

March 7, 2026
•Ars technica

Here’s something that caught my attention — an AI startup in San Francisco, Hayden AI, just sued its former CEO, Chris Carson. According to Cyrus Farivar reporting for Technology, Hayden alleges that Carson stole 41GB of proprietary email data right before he left in September 2024. Now, here’s where it gets interesting — Hayden claims Carson also faked signatures, sold stock without permission, and even fudged expenses. And get this — Carson has since started a rival company called EchoTwin AI. But here’s the thing — Carson hasn’t responded to any of the requests for comment. So what does this actually mean for startups? The risks of insider theft and deception just got a whole lot clearer. As Farivar points out, this isn’t just a legal spat — it’s a warning about trust and security in the fast-paced world of AI. Keep an eye on this case — it could reshape how founders handle sensitive info and integrity.

Hayden AI, a San Francisco startup that makes spatial analytics tools for cities worldwide, has sued its co-founder and former CEO, alleging that he stole a large quantity of proprietary information in the days leading up to his ouster from the company in September 2024.

In a lawsuit filed late last month in San Francisco Superior Court but only made public this week, Hayden AI claims that former CEO Chris Carson undertook what it called “numerous fraudulent actions,” which include “forged board signatures, unauthorized stock sales, and improper allocation of personal expenses.” (Ars covered Hayden AI’s recent product expansion in Santa Monica, Calif.)

Carson, who has since founded a rival company called EchoTwin AI, did not respond to Ars’ request on Wednesday for comment sent via LinkedIn, email, and text message.

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Hayden AI, a San Francisco startup that makes spatial analytics tools for cities worldwide, has sued its co-founder and former CEO, alleging that he stole a large quantity of proprietary information in the days leading up to his ouster from the company in September 2024.

In a lawsuit filed late last month in San Francisco Superior Court but only made public this week, Hayden AI claims that former CEO Chris Carson undertook what it called “numerous fraudulent actions,” which include “forged board signatures, unauthorized stock sales, and improper allocation of personal expenses.” (Ars covered Hayden AI’s recent product expansion in Santa Monica, Calif.)

Carson, who has since founded a rival company called EchoTwin AI, did not respond to Ars’ request on Wednesday for comment sent via LinkedIn, email, and text message.

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AI startup sues ex-CEO, saying he took 41GB of email and lied on résumé | Speasy