Researchers Show Air-Gapped Computers Can Leak Secrets via Radio Signals from RAM

A research paper posted to arXiv describes a technique for extracting data from computers that are isolated from networks, known as air-gapped systems. The approach reportedly encodes information as radio signals emitted by the computer's memory (RAM). Because the method relies on physical emissions rather than network connections, it targets systems normally considered safe from remote data theft. The work was shared on Hacker News, where it drew modest attention and a small number of comments. The full paper, available at arxiv.org, contains the technical details of the proposed method.