Apple's lawsuit against OpenAI just got messier. In a new court filing, Apple claims forensic analysis of a MacBook belonging to Chang Liu—a former senior electrical engineer who left Apple for OpenAI in January—reveals damning evidence. According to Apple, Liu downloaded confidential circuit schematics after his departure, then used those same schematics in his work at OpenAI. The forensic inspection also found that Liu and others at OpenAI knew about his unauthorized access to Apple's cloud storage, contradicting any claim of ignorance. Most seriously, Apple alleges Liu instructed an OpenAI colleague to destroy evidence once he learned Apple was investigating him. The technical details matter here. Liu allegedly ran a simulation in March using the stolen circuit schematic file in LTspice, an electrical engineering tool. In messages from around that time, Liu mentioned his AI "agent" had learned to run LTspice and review results. Apple's argument hinges on a specific concern: when trade secret information gets fed into an AI model that learns from it, the damage becomes "irreversible and continually propagating." The company also discovered Liu's schematic use because he ran it on a Mac mini that later synced with his MacBook via iCloud—giving Apple another device it wants to examine. Apple is using this evidence to push the court for expedited discovery, arguing it's not on a "fishing expedition" but has legitimate grounds to demand faster access to documents and depositions. OpenAI's legal team, notably, didn't examine the MacBook when Liu's lawyers handed it over and instead tried to argue the device's data would disprove Apple's claims. The irony isn't lost on Apple's filing: the defendants ignored evidence that now appears to support Apple's core allegations. OpenAI has asked for the entire case to be dismissed.