Spiro’s letter complains about Meta hiring some of the many workers who were laid off or resigned from Twitter in the eight months since Musk bought the company.

“Over the past year, Meta has hired dozens of former Twitter employees… these employees had and continue to have access to Twitter’s trade secrets and other highly confidential information,” Spiro wrote in the letter to Zuckerberg. The workers, he alleged, “owe ongoing obligations to Twitter,” and many “have improperly retained Twitter documents and electronic devices.”

“We fired a bunch of people and you hired them to build the same thing they built for us! Not fair not fair!”