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Researchers at the Massachusetts Institute of Technology have discovered a way to foil memory-timing side-channel attacks that’s more efficient than other methods. The attacks can be used to steal secrets such as cryptographic keys or user passwords stored in a computer’s memory.

According to a report by the researchers, the attacks are enabled by shared computer resources. “Through these shared resources, an attacker can seek out even very fine-grained information,” Mengjia Yan, an assistant professor in the electrical engineering and computer science department at MIT, said in a statement.

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