Security researchers at Ledger say they have uncovered a serious vulnerability affecting Android smartphones that run on MediaTek processors. The flaw could allow someone with physical access to a phone to extract sensitive cryptocurrency wallet data—including PIN codes and seed phrases—in under a minute. The discovery comes from Ledger’s internal security research division known as the Donjon team, which focuses on analyzing hardware and software security issues tied to digital asset storage. In their latest research, the team found that certain MediaTek chips contain a weakness in the device’s secure boot chain, creating a small but critical window during startup
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