Electrical computers and digital processing systems: support – Computer power control – Having power source monitoring
Reexamination Certificate
2011-01-25
2011-01-25
Butler, Dennis M (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Having power source monitoring
C713S300000, C726S024000, C726S025000
Reexamination Certificate
active
07877621
ABSTRACT:
Software attacks such as worms and viruses are detected in an electronic device by monitoring power consumption patterns. In a first embodiment, software attacks are detected by an increase in power consumption. The increased power consumption can be caused by increased network traffic, or by increased activity in the microprocessor. Monitoring power consumption is particularly effective for detecting DOS/flooding attacks when the electronic device is in an idle state. In a second embodiment, a power consumption signal is converted to the frequency domain (e.g., by fast Fourier transform). The highest amplitude frequencies are identified. Specific software attacks produce characteristic frequencies in the power consumption signal. Software attacks are therefore detected by matching the highest amplitude frequencies with frequencies associated with specific worms and viruses. Identification of a particular software attack typically requires matching of 3 or more of the highest amplitude frequencies, and, optionally, amplitude information.
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Davis, IV Nathaniel J
Jacoby Grant A.
Marchany Randolph C.
Butler Dennis M
The United States of America as represented by the Secretary of
Virginia Tech Intellectual Properties Inc.
Whitham Curtis Christofferson & Cook PC
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