Page 222 - Cyber Defense eMagazine August 2024

time. This is particularly important for detecting advanced persistent threats and other sophisticated cyber
attacks that use diverse and evolving techniques.

SDRs can detect and analyze various signal types, including those used in covert communication
channels, command and control (C2) servers, and data exfiltration methods. By continuously monitoring
the spectrum, SDRs can spot unusual patterns and behaviors indicating cyber threats. This is all made
possible through the use of dedicated DSP chips embedded within SDRs, most commonly field
rd
programmable gate arrays, which allow for parallel processing and the integration of 3 party IP for a
variety of techniques for detection using different processing strategies.

In addition to detection, SDRs are invaluable for forensic analysis after a cyber incident. By capturing and
storing signal data, they provide critical information for reconstructing events, identifying attack methods,
and developing prevention strategies.

Counterintelligence and Electronic Warfare

In counterintelligence and electronic warfare, high-performance SDRs are indispensable. Governments
and military organizations use SDRs to detect and counteract electronic threats like signal jamming,
spoofing, and eavesdropping.

SDRs can detect and analyze signals from various sources, including radar systems, communication
networks, and unmanned aerial vehicles (UAVs). By identifying signal characteristics, SDRs help
determine their origin and intent, which is crucial for developing countermeasures and protecting against
electronic threats.

Technical Capabilities and Advancements

The effectiveness of high-performance SDRs in cybersecurity comes from their advanced technical
capabilities. Several key features and advancements make these SDRs particularly suitable for
cybersecurity applications.

Wide Tuning Range and High Bandwidth

A tuning range of up to 40GHz allows SDRs to monitor a vast portion of the electromagnetic spectrum.
This wide range is essential for detecting and analyzing signals across different frequency bands,
including those used by new technologies like 5G and satellite communications.

High bandwidth is another critical feature, enabling SDRs to capture and process large amounts of data
in real time, which is crucial for detecting fast and transient signals. High bandwidth also allows for
simultaneous monitoring of multiple frequency bands, providing comprehensive spectrum coverage.

Cyber Defense eMagazine – August 2024 Edition 222
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