Twitter has threatened to sue Meta Platforms over its new Threads platform in a letter sent to the Facebook parent's CEO Mark Zuckerberg by Twitter's lawyer Alex Spiro. Meta, which launched Threads on Wednesday and has logged more than 30 million sign ups, looks to take on Elon Musk's Twitter by leveraging Instagram's billions of users. Spiro, in his letter, accused Meta of hiring former Twitter employees who "had and continue to have access to Twitter's trade secrets and other highly confidential information," News website Semafor first reported.