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Air Gaps Undone by Acoustic Attack via LCD Screens

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Summary
Nutrition label

62% Informative

A newly devised covert channel attack method could undermine air gaps at highly sensitive organizations.

Israel 's Mordechai Guri of Ben-Gurion University has long researched ways of crossing air gaps with sound waves.

His latest attack scenario, "Pixhell," enables data theft using sounds produced by specially generated, rapidly shifting bitmap patterns on an LCD screen.

The greater distance between communicating computers, the more difficult it is to exploit covert channels.

The operative idea is signal-to-noise ratio ( SNR ) How much noise does one have to generate to make a covert channel attack impractical? Whether such science-fiction-level defenses are warranted will depend on the organization at risk.

VR Score

64

Informative language

64

Neutral language

26

Article tone

informal

Language

English

Language complexity

55

Offensive language

not offensive

Hate speech

not hateful

Attention-grabbing headline

not detected

Known propaganda techniques

not detected

Time-value

long-living

External references

no external sources

Source diversity

no sources

Affiliate links

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