3 Cyber Network Based Systems Analyst II

3 weeks ago

Arlington, United States ARGO Cyber Systems, LLC Full time

The DHS's Hunt and Incident Response Team (HIRT) secures the Nation's cyber and communications infrastructure. HIRT provides DHS's front-line response for cyber incidents and proactively hunting for malicious cyber activity. Argo Cyber Systems supports this mission with DHS, performs HIRT investigations to develop a preliminary diagnosis of the severity of breaches. Argo Cyber provides HIRT remote and onsite advanced technical assistance, proactive hunting, rapid onsite incident response, and immediate investigation and resolution using host-based, network-based and cloud-based cybersecurity analysis capabilities. Contract personnel provide front line response for digital forensics/incident response (DFIR) and proactively hunting for malicious cyber activity. Argo Cyber Systems is seeking Cyber Network Defense Analysts (CNDA) to support this critical customer mission.

The Computer Network Defense Analyst uses information collected from a variety of sources to monitor network activity and analyze it for evidence of suspicious behavior. Monitoring and analysis are performed to identify and report events that occur, or might occur, within the network, in order to protect information, information systems, and networks from threats. CNDAs review data collected to analyze cyber events, and the network environment, to find trends, patterns or anomaly correlations that indicate more serious attacks or future threats. The CNDAs will recommend proactive measures to contain the incident. These proactive measurers include, but are not limited to, identification of intruder local changes/suspect interactions, isolation, in-depth digital media analysis, consultation with law enforcement or counterintelligence organizations, development of signatures to detect this malicious behavior and development and deployment of eradication tools.

Responsibilities:

The majority of the CNDA's time (75%) will be spent executing the following tasks:

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 (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

Determine tactics, techniques, and procedures (TTPs) for intrusion sets

Examine network topologies to understand data flows through the network

Identify and analyze anomalies in network traffic using metadata

Conduct research, analysis, and correlation across a wide variety of all source data sets (indications and warnings)

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

Notify designated managers, cyber incident responders, and cybersecurity service provider team members of suspected cyber incidents and articulate the event's history, status, and potential impact for further action in accordance with the organization's cyber incident response plan

Approximately 25% of the CNDA's time will be spent executing the following tasks:

Prepare and update manuals, instructions, and operating procedures

Evaluate established methods and procedures and prepare recommendations for changes in methods and practices where appropriate

Plan and carry out difficult and complex assignments and develop new methods, approaches, and procedures

Conduct analyses and recommend resolution of complex issues affecting the specialty area

Ensure optimal use of commercially available products

Prepare and present reports

Evaluate the effectiveness of installed systems and services

Required Skills/Clearances:

S. Citizenship

Active TS/SCI clearance

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

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

Desired Skills:

GSEC (SANS401), Arcsight (or other SEIM solution), Network+, Security+ and Python programming experience would be ideal.

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 & 4-6 years of network investigations experience.

Desired Certifications/Education:

One or more of the following professional certifications: GNFA, GCIH, GCIA, GSEC, CASP+, CySA+,

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