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Researchers Revive 2000s ‘Blinkenlights’ Technique to Dump Smartwatch Firmware

First seen 12 Dec 2025, 18:53 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

Security researchers have successfully extracted firmware from a budget smartwatch using a revived technique from the 2000s called 'Blinkenlights.' This method, originally designed for network devices, has been adapted to exploit modern TFT screens. Analysts from Quarkslab purchased a smartwatch for approximately €12 to demonstrate this vulnerability.

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