Network Based Systems Analyst

Arlington, Virginia

Base One Technologies
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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

• Perform management duties as required to support the team, projects and analysts

• Document and escalate incidents (including event's history, status, and potential impact for further action) 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 to gain situational awareness and determine the effectiveness of an observed attack

• 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 and determine possible causes of alerts

• Provide timely detection, identification, and alerting of possible attacks/intrusions, anomalous activities, and misuse activities and distinguish these incidents and events from benign activities - 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

• Validate intrusion detection system (IDS) alerts against network traffic using packet analysis tools

• Identify applications and operating systems of a network device based on network traffic

• 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 which can be implemented on cyber defense network tools in response to new or observed threats within the network environment or enclave Required Skills:

• U.S. Citizenship

• Active TS/SCI clearance

• Ability to obtain Department of Homeland Security (DHS) Entry on Duty (EOD) Suitability

• 8+ 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 Desired Skills:

• Python programming experience

• Strong math and science background

• Experience with Carnegie Mellon SiLK tool suite Required Education:
BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 10 years of network investigations experience. Desired Certifications:
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+ Notes:
This position; on-site work only
NBA04 for adversarial pursuit team
Date Posted: 01 May 2025
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