Leaker Jon Prosser denies Apple's charges and blames everything on his co-defendant

Jon Prosser has formally responded to Apple's lawsuit over alleged iOS leaks, claiming that he is entirely innocent and that colleague Michael Ramacciotti is solely responsible for any alleged trade secret theft.

Apple's now year-long case against Prosser had initially seen the YouTuber repeatedly ignoring court deadlines. He began responding in April 2026, and his lawyers have now formally filed his rebuttal to Apple's accusations that he and Ramacciotti conspired to steal trade secrets from Apple employee Ethan Lipnik.

"Ramacciotti's is [sic] responsible for all harm caused to Prosser and should indemnify him for all harm caused," says the filing. "Ramacciotti's act of displaying the features was not induced by Prosser and, as such, Ramacciotti is completely responsible for the disclosure of Apple's alleged trade secrets, if any."

Prosser specifically denies offering money in return for the information Ramacciotti showed him. He also denies knowing how his co-defendant got his information, or conspiring ahead of time to gather it.

Ramacciotti unlocked Lipnik's iPhone, which had an early release of what was then called iOS 19, and shared confidential details. Prosser claims no knowledge of whose iPhone it was, and denies knowing that Ramacciotti was in the Apple employee's apartment.

Prosser does admit to sharing with Ramacciotti a portion of the revenue his YouTube video brought in, and said this was to secure exclusivity. "Once Prosser learned how Ramacciotti acquired the proprietary information, he disconnected communication with Ramacciotti," says the filing.

At one point the filing says that Prosser "has not [sic] knowledge if iOS 19 was in fact 'unreleased'." But later it says "Prosser admits that the information was unreleased software."

That contradictory claim appears to mean that it was during the demonstration of iOS 19 that Prosser did not know it was iOS 19 that he was being shown.

Prosser's filing, as first spotted by MacRumors, requests trial by jury.

Apple has not responded publicly to the filing.

Separately, Michael Ramacciotti has been cooperating with the courts since at least October 2025, and provided Apple with his emails, computers, and archives. Ramacciotti's lawyers have claimed that he did not appreciate the value and nature of what he showed Prosser.