The Elon Musk-Twitter purchase saga continues.
Musk's attorney issued Twitter's general counsel and head of legal, Vijay Gadde, "an additional termination notice" on Monday.
Twitter denied the claims Tuesday.
Musk cancelled a $44 billion sale to Twitter in July.
Twitter supplied "false and deceptive representations" of user data, including the number of "fake or spam accounts," he claimed.
Twitter is trying to push a deal that values the firm 25% higher than this week.
Tesla's 'Full Self-Driving' software will cost $15,000, claims Elon Musk.Musk's legal team has another cause to end the arrangement, including The Washington Post.
The letter highlights Zatko's criticism that Twitter is "uniquely prone to systematic disruption" and "based in large part on theft and violation of third-party intellectual property."