Cyber Defense Analyst 2 (CDA2) with Security Clearance

RealmOne; Baltimore (MD); On-site; USD 90,000 - 130,000; Full time

Job summary

RealmOne is seeking a Cyber Defense Analyst II to monitor and analyze network activity, identify anomalies, and generate actionable incident reports. You will leverage SIEM tools, PCAP analysis, and threat-hunting methods to protect data and infrastructure while aligning with DoD security requirements.

The role requires DoD 8570 CSSP baseline, IAT I/II, CE certifications, and an active polygraph. You will work on mission-critical security engagements across Azure/AWS environments and collaborate

Qualifications

• Four years of CDA experience in programs of similar scope.
• Bachelor's degree may substitute for two years of CDA experience.
• One year of TCP/IP fundamentals experience.
• One year of tcpdump or Wireshark experience.
• Two years of SIEM experience (Splunk/ArcSight/Kibana/LogRhythm).
• Two years of network and threat analysis software usage.
• Cloud experience in Azure/AWS with Microsoft Sentinel.
• DoD 8570 CSSP Analyst baseline certification required.
• IAT Level I or II certification required.
• CE certification required.
• Active security clearance with polygraph

Responsibilities

• Use cyber defense tools to monitor, detect, analyze, categorize, and triage anomalous activity.
• Generate cybersecurity cases with event history and action recommendations.
• Apply detection methods to defend against network abuses and intrusions.
• Conduct PCAP/network analysis and identify attack phases.
• Perform event correlation to assess incident impact and respond accordingly.

Skills

TCP/IP basics

PCAP analysis

Network forensics

Event correlation

Threat hunting

Education

Bachelor's degree in a related field

Tools

tcpdump

Wireshark

Splunk

ArcSight

Kibana

LogRhythm

Job description

RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch industry professionals. Join us on this journey as we execute this mission-critical contract providing Cybersecurity Expertise and Risk Management Services! Your effort and expertise are crucial to the success and execution of this impactful mission that is critical in ensuring mission success through Security Engineering, Risk Management and Assessment, and Insider Threat Analysis, by improving, protecting, and defending our Nation's Security. Job Description: * Uses information collected from a variety of sources to monitor network activity and analyze it for evidence of anomalous behavior. Identifies, triages, and reports events that occur in order to protect data, information systems, and infrastructure. Finds trends, patterns, or anomaly correlations utilizing security-relevant data. Recommends proactive security measures. Conducts analysis to isolate indicators of compromise. Notify designated managers, cyber incident responders, and cybersecurity service provider team member 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.The Cyber Defense Analyst 2 shall possess the following capabilities: * Use cyber defense tools to monitor, detect, analyze, categorize, and perform initial triage of anomalous activity.

• Generate cybersecurity cases (including event's history, status, and potential impact for further action) and route as appropriate.
• Leverage knowledge of commonly used network protocols and detection methods to defend against related abuses.
• Apply cybersecurity and privacy principles to organizational requirements (relevant to confidentiality, integrity, availability, authentication, non-repudiation).
• Perform advanced manual analysis to hunt previously unidentified threats.
• Conduct PCAP analysis.
• Identify cyber-attack phases based on knowledge of common attack vectors and network layers, models and protocols.
• Apply techniques for detecting host- and network-based intrusions.
• Working knowledge of enterprise-level network intrusion detection/prevention systems and firewall capabilities.
• Understand the foundations of a hardened windows network and what native services and protocols are subject to abuse.
• Familiarity with fragmentation of network traffic and how to detect and evaluate fragmentation related attacks in raw packet captures.
• Conduct network - traffic, protocol and packet-level - and netflow analysis for anomalous values that may be security-relevant using appropriate tools.
• Understand snort filters and how they are crafted and tuned to feed IDS alerting.
• Understand system and application security threats and vulnerabilities to include buffer overflow, SQL injection, race conditions, covert channel, replay and return-oriented attacks, malicious code and malicious scripting.
• Analyze malicious activity to determine weaknesses exploited, exploitation methods, effects on system and information.
• 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.
• Familiar with indications of Command and Control (C2) channels and what strategies attackers use to bypass enterprise defenses from a compromised host. Qualifications: * Four (4) years of demonstrated experience as CDA in programs and contracts of similar scope, type, and complexity required. A technical bachelor's degree from an accredited college or university may be substituted for two (2) years of CDA experience on projects of similar scope, type, and complexity.
• One (1) year of demonstrated and practical experience in TCP/IP fundamentals.
• One (1) year of demonstrated experience with tcpdump or Wireshark.
• Two (2) years of demonstrated experience using security information and event management suites (such as Splunk, ArcSight, Kibana, LogRhythm).
• Two (2) years of demonstrated experience in network analysis and threat analysis software utilization.
• Two (2) years of demonstrated experience maintaining or managing Cloud environments such as Microsoft Azure, Amazon Web Services (AWS), using tools like Microsoft Sentinel.Certifications Required: * Requires DoD 8570 compliance with CSSP Analyst baseline certification.
• Requires Information Assurance Technical (IAT) Level I or Level II certification.
• Requires Computing Environment (CE) certification.
• Requires successful completion of the Splunk software training course "Fundamentals 1".Position requires active Security Clearance with appropriate Polygraph