LCD pwn System: How to modulate screen brightness to covertly transmit data from an air-gapped computer… slowly

To be honest, it was the impracticality and inefficiency that first attracted us to this otherwise cunning exfiltration

Boffins from Ben-Gurion University of the Negev and Shamoon College of Engineering in Israel have come up with yet another TEMPEST-style attack to exfiltrate data from an air-gapped computer: leaking binary signals

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Source: Theregister.co.uk/security / Article: "LCD pwn System: How to modulate screen brightness to covertly transmit data from an air-gapped computer... slowly"