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Twitter Threatens to Sue Meta Over Alleged Trade Secret Theft With Threads

Elon Musk's lawyer is accusing Meta of stealing trade secrets from Twitter to build Threads by hiring dozens of former Twitter employees.

 & Michael Kan Principal Reporter

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It’s no secret that Meta is launching Threads to compete against Twitter. But now Elon Musk is threatening to hit back with a lawsuit to stop the app. 

On Wednesday, a lawyer for Musk sent a letter to Meta CEO Mark Zuckerberg, accusing his company of systematically stealing Twitter’s trade secret to build Threads, Semafor reports.

The letter claims Meta hired “dozens of former Twitter employees” who had access to the company’s trade secrets and other confidential information. “With that knowledge, Meta deliberately assigned these employees to develop, in a matter of months, Meta’s copycat ‘Threads’ app,” the letter says.

No employees were named, but the letter alleges that many of them “improperly retained Twitter documents and electronics devices.” In addition, the letter implies the same employees violated their non-disclosure agreements with Twitter after joining Meta. 

The lawyer then warns that a lawsuit is likely coming Zuckerberg’s way to stop the trade secret violations and force Meta to pay civil damages. “Twitter intends to strictly enforce its intellectual property rights, and demands that Meta take immediate steps to stop using any Twitter trade secrets or other highly confidential information,” the letter adds. “Further, Meta is expressly prohibited from engaging in any crawling or scraping of Twitter’s followers or following data.”

Musk, who has laid off most of Twitter's staff, tweeted: "Competition is fine, cheating is not."

However, Meta is denying the allegations. “No one on the Threads engineering team is a former Twitter employee —that’s just not a thing," posted company spokesperson Andy Stone.

Still, Zuckerberg has been trolling Musk in a curious way. On Wednesday, he posted a rare tweet involving the Spider-Man pointing at Spider-Man meme, suggesting he’s already well aware Threads is seen as a clone of Twitter. 

That said, Zuckerberg is hoping Threads will eventually surpass Twitter in both its appeal and user base. On Thursday, Meta’s CEO posted that he’s aiming for Threads to eventually reach over 1 billion users.

“The goal is to keep it friendly as it expands. I think it's possible and will ultimately be the key to its success. That's one reason why Twitter never succeeded as much as I think it should have, and we want to do it differently,” Zuckerberg added, in another subtle shot at Musk. (Both tech CEOs may have the chance to fight this battle in an actual ring sometime soon.)

In the meantime, Twitter’s new CEO, Linda Yaccarino, posted her own tweet, dismissing Threads as a real rival. “We're often imitated —but the Twitter community can never be duplicated,” she wrote.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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