“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,” Spiro wrote in a letter.

“Twitter reserves all rights, including, but not limited to, the right to seek both civil remedies and injunctive relief without further notice to prevent any further retention, disclosure, or use of its intellectual property by Meta,” the Twitter lawyer added. Spiro also accused Meta of hiring dozens of former Twitter employees who “had and continue to have access to Twitter’s trade secrets and other highly confidential information.” Andy Stone, Meta’s communications director, said Twitter’s accusations are “baseless”. “No one on the Threads engineering team is a former Twitter employee - that’s just not a thing,” he was quoted as saying. Musk said in a tweet on Friday: “Competition is fine, cheating is not.” Twitter CEO Linda Yaccarino on Thursday appealed to the Twitter community to stay together. She said on Twitter, everyone’s voice matters. “Whether you’re here to watch history unfold, discover real-time information all over the world, share your opinions, or learn about others - on Twitter you can be real,” Yaccarino posted. “You built the Twitter community. And that’s irreplaceable. This is your public square,” she added. Yaccarino said “we are often imitated but the Twitter community can never be duplicated”.