The information was uncovered in emails provided recently as part of the antitrust trial between Epic Games and Apple. The game maker filed a lawsuit against the tech giant last year in a California court over its App Store practices, specifically related to Apple removing Epic’s hit game, Fortnite, from the App Store for allegedly violating terms of contract.

The published emails (a link is provided by Ars Technica) show exchanges between Apple employees, including executives, discussing the XcodeGhost incident and the steps the company should take in response.