Method for detecting at least one compromised computer device in an information system
US11316596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jun 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/57
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for detecting at least one compromised computer device in an information system, the method including: performing a frequency scan involving dividing the electromagnetic spectrum into frequency sub-bands; performing, in each frequency sub-band, a time envelope demodulation in order to recover signals transmitted by at least one computer device of the information system; converting each demodulated signal in the frequency domain; constructing a frequency spectrum on the basis of the demodulated signals in all the frequency sub-bands; finding, in each frequency sub-band of the frequency spectrum, at least one amplitude line having energy that is greater than a first predefined energy threshold; and, if at least one line having energy that is greater than the first predefined energy threshold is found, indicating the presence of at least one compromised computer device transmitting compromising spurious signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.