Security experts have warned that Extensible Firmware Interface (EFI) updates often lack transparency, and fail to cover all hardware models and software versions, leading to dangerous gaps in protection. Duo Labs director, Rich Smith, told attendees at Infosecurity Europe today that securing the EFI layer is particularly important as its position in a computing system means compromise could give hackers the upper hand in terms of stealth, persistence and access to anything above it.

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