Your Android phone may remember AI chats you thought you deleted

Georgia Tech researchers created ORISA, a forensic tool that retrieves deleted conversations from locally-running AI assistants on Android phones. In one test, the tool recovered 26 previously shared facts versus 14 accessible to the original AI session, demonstrating that deletion doesn't fully clear AI-generated data from device memory. While local AI apps offer privacy benefits by processing conversations on-device rather than on remote servers, the research shows that device-level deletion is incomplete. The technique requires forensic access and doesn't confirm whether cloud-based chatbot conversations face similar risks.

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