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Company

Original Job Post

Castalia Systems · 1 week ago

Cyber Network Defense Analyst

Arlington, VA

Full-time

Onsite

Mid Level

2+ years exp

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Responsibilities

Characterize and analyze network traffic to identify anomalous activity and potential threats to network resources.

Coordinate with enterprise-wide cyber defense staff to validate network alerts.

Document and escalate incidents that may cause ongoing and immediate impact to the environment.

Perform cyber defense trend analysis and reporting.

Perform event correlation using information gathered from a variety of sources within the enterprise.

Provide daily summary reports of network events and activity relevant to cyber defense practices.

Receive and analyze network alerts from various sources within the enterprise.

Provide timely detection, identification, and alerting of possible attacks/intrusions.

Use cyber defense tools for continual monitoring and analysis of system activity to identify malicious activity.

Analyze identified malicious activity to determine weaknesses exploited, exploitation methods, effects on system and information.

Identify and analyze anomalies in network traffic using metadata.

Reconstruct a malicious attack or activity based off network traffic.

Identify network mapping and operating system (OS) fingerprinting activities.

Assist in the construction of signatures for cyber defense network tools.

Qualification

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Cyber Defense AnalysisSignature DevelopmentIntrusion DetectionIncident HandlingProtocol AnalyzersData CollectionPacket AnalysisTrend AnalysisTS/SCI ClearanceDHS EOD SuitabilityPythonScienceCarnegie Mellon SiLKGNFAGCIHGCIAGSECCASP+CySA+PaLMSFedVTEArcsightSecurity+

Required

BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 4+ years of network investigations experience.

2+ years of direct relevant experience in cyber defense analysis using leading edge technologies and industry standard cyber defense tools.

Experience successfully developing and deploying signatures.

Experience detecting host and network-based intrusions via intrusion detection technologies (e.g., Snort).

Experience implementing incident handling methodologies.

Experience implementing protocol analyzers.

Experience collecting data from a variety of cyber defense resources.

Experience reading and interpreting signatures (e.g. snort).

Experience performing packet-level analysis.

Experience conducting trend analysis.

Minimum active TS/SCI clearance with the ability to obtain and maintain DHS EOD suitability.

Preferred

Python programming experience

Strong math and science background

Experience with Carnegie Mellon SiLK tool suite

One or more of the following professional certifications: GNFA, GCIH, GCIA, GSEC, CASP+, CySA+, PaLMS, FedVTE, GSEC (SANS401), Arcsight (or other SEIM solution), Network+, Security+