TECH NEWS

Microsoft has mostly repaired flaw in Surface hardware that allowed unprotected devices to be bricked by a single packet

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EXCLUSIVE For the past 90 days, Microsoft has been quietly patching a firmware flaw in Surface devices that allowed the hardware to be bricked with a single packet, though only for those who have disabled Secure Core and Secure Boot.

And the company's Copilot AI software inadvertently helped identify the faulty firmware.

According to Jack Darcy, a security researcher based in Australia, his instance of Microsoft Copilot stumbled across the bug after being asked to adjust the screen backlighting on a Surface device. The Copilot-conjured Python script ended up rendering the researcher's laptop inoperable by overwriting the embedded controller firmware.

"Copilot autonomously created and executed four progressively aggressive Python scripts during a probe for backlight control values that sent raw SSAM ioctl commands (SSAM_CDEV_REQUEST = 0xC028A501) directly to the SAM microcontroller through the SAM software path," Darcy explained to The Register.

The SAM or SSAMis the embedded controller used...

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