Researchers Develop Forensic Tool That Recovers Deleted AI Chats From Android Phones

Researchers at the Georgia Institute of Technology have developed a digital-forensics tool capable of recovering deleted conversations from AI assistants running locally on Android devices.

The tool, named ORISA, examines residual information in a phone's working memory to reconstruct conversations that users have deleted through an application's interface. It can also rebuild recovered information into a functioning AI session.

The researchers tested ORISA across 60 configurations involving 10 Android applications and three AI models.

In one experiment, researchers provided a fictional AI assistant with 100 facts before deleting the conversation. ORISA subsequently recovered 26 facts, compared with 14 that the original assistant could still access before deletion.

The findings demonstrate that deleting an AI conversation does not necessarily erase its contents from device memory.

For digital-forensics investigators, the research introduces a potential method for examining interactions with locally hosted AI systems. Recovered conversations could help establish what information was shared with an assistant and what responses it provided.

However, recovery requires access to relevant device memory, and the available information can diminish as memory is overwritten. Reconstructed conversations also require validation before being treated as reliable evidence.

The research raises privacy concerns as more AI applications process sensitive conversations directly on personal devices.