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Computer Network Defense Jobs in Virginia (NOW HIRING)

ARSIEM

Network Based Systems Analyst IV

Arlington, VA · On-site

Assists with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies * Collects network intrusion artifacts (e.g., PCAP, domains ...

ARSIEM

Network Based Systems Analyst IV

Arlington, VA · On-site

Assists with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies * Collects network intrusion artifacts (e.g., PCAP, domains ...

Nwis

Cyber Network Forensic Analyst II

Sterling, VA · On-site

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies; - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

Nwis

Cyber Network Forensic Analyst II

Sterling, VA · On-site

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies; - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

Nwis

Cyber Network Forensic Analyst III

Sterling, VA

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

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Computer Network Defense information

What is computer network defense?

Computer Network Defense (CND) refers to the strategies, technologies, and processes used to protect computer networks and systems from unauthorized access, cyberattacks, and other security threats. CND professionals monitor network traffic, detect and respond to security incidents, and implement measures to prevent future attacks. Their work is critical for maintaining the confidentiality, integrity, and availability of information systems, especially in organizations that handle sensitive data. CND also involves regular vulnerability assessments, security policy enforcement, and incident response planning.

What are the key skills and qualifications needed to thrive in computer network defense?

To excel in Computer Network Defense, professionals need a strong understanding of network protocols, cybersecurity principles, and threat analysis, often supported by a degree in information security or computer science. Familiarity with intrusion detection systems (IDS), firewalls, SIEM platforms, and certifications such as CompTIA Security+ or CISSP are commonly required. Analytical thinking, attention to detail, and effective communication are valuable soft skills for this role. These competencies are crucial for proactively identifying vulnerabilities, responding to incidents, and safeguarding organizational networks from evolving cyber threats.

What are some common challenges faced by professionals in computer network defense roles?

Professionals in Computer Network Defense often face the challenge of keeping up with rapidly evolving cyber threats and attack techniques. The role requires continuous learning and real-time problem-solving as new vulnerabilities and exploits emerge frequently. Team members must also balance proactive threat hunting with responding to immediate incidents, often collaborating closely with IT, security operations, and management to ensure a resilient defense posture. Adaptability, strong communication, and an analytical mindset are key to thriving in this dynamic environment.

What is the difference between Computer Network Defense vs Cybersecurity Analyst?

AspectComputer Network DefenseCybersecurity Analyst
CertificationsCompTIA Security+, CISSP, CEHCompTIA Security+, CISSP, CEH
Work EnvironmentFocus on protecting network infrastructure, monitoring network traffic, and responding to network threatsBroader security analysis, including system vulnerabilities, incident response, and security policies
Employer & Industry UsagePrimarily in government, military, and large enterprise networksAcross various industries including finance, healthcare, and technology

Computer Network Defense and Cybersecurity Analyst roles share similar certifications and work environments, but Network Defense specializes in protecting network infrastructure specifically, while Cybersecurity Analysts handle a broader range of security tasks across systems and applications.

What are popular job titles related to Computer Network Defense jobs in Virginia?

For Computer Network Defense jobs in Virginia, the most frequently searched job titles are:

What job categories do people searching Computer Network Defense jobs in Virginia look for?

The top searched job categories for Computer Network Defense jobs in Virginia are:

Computer Network Defense jobs near you
Infographic showing various Computer Network Defense job openings in Virginia as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 20% Part Time, 2% Contract, and 1% Nights. Highlights an 76% Physical, 2% Hybrid, and 22% Remote job distribution.

Network Based Systems Analyst III

Arlington, VA • On-site

Solutions3 LLC
11 - 50 employees
Learn more about Solutions3 LLCexternal

$94K - $112K/yr

Full-time

Re-posted 17 days ago

Job description

Title: Network Based Systems Analyst III
Description:
Solutions³ LLC is supporting our prime contractor and their U.S. Government customer on a large mission critical development and sustainment program for on and offsite incident response to Government agencies and critical infrastructure owners who experience cyber-attacks. Solutions³ LLC provides advanced technical assistance, proactive hunting, rapid onsite incident response, and immediate investigation, using host and network-based cybersecurity analysis capabilities.
Solutions³ LLC is seeking a Cyber Network Defense Analysts (CNDA) to support this critical mission by providing front line response for digital forensics/incident response (DFIR) and proactively hunting for malicious cyber activity.
Eligibility:
  • Must be aUS Citizen
  • Must have anactive TS/SCIclearance
  • Must be able to obtainDHS Suitabilityprior to starting employment
  • 5+ years of directly relevant experience in network investigations
Responsibilities Include:
  • Assists the Government lead in coordinating teams in preliminary incident response investigations
  • Assists the Government lead with interfacing with the customer while on site
  • Determines appropriate courses of actions in response to identified and analyses anomalous network activity
  • Assesses network topology and device configurations identifying critical security concerns and providing security best practice recommendations
  • Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses discovered data to enable mitigation of potential Computer Network Defense incidents
  • Analyzes identified malicious network activity to determine weaknesses exploited, exploitation methods, effects on system and information
  • Collects network device integrity data and analyze for signs of tampering or compromise
  • Assists with real-time CND incident handling (i.e., forensic collections, intrusion correlation and tracking, threat analysis, and advising on system remediation) tasks to support onsite engagements
Required Skills:
  • In depth knowledge of CND policies, procedures and regulations
  • In depth knowledge of TCP/IP protocols
  • In depth knowledge of standard protocols - ICMP, HTTP/S, DNS, SSH, SMTP, SMB, NFS, etc.
  • In depth knowledge and experience of Wifi networking
  • In depth knowledge and experience of network topologies DMZ's, WAN's, etc.
  • Substantial knowledge of Splunk (or other SIEM's)
  • Understanding of MITRE Adversary Tactics, Techniques and Common Knowledge (ATT&CK)
  • Knowledge of Computer Network Defense policies, procedures, and regulations
  • Knowledge of defense-in-depth principles and general attack stages with respect to network security architecture
  • Ability to characterize and analyze network traffic to identify anomalous activity and potential threats to network resources
  • Ability to identify and analyze anomalies in network traffic using metadata
  • Experience with reconstructing a malicious attack or activity based on network traffic
  • Experience examining network topologies to understand data flows through the network
  • Must be able to work collaboratively across physical locations
Desired Skills:
  • Substantial knowledge of network device integrity concepts and methodologies
  • Proficiency with network analysis software (e.g. Wireshark)
  • Proficiency with carving and extracting information from PCAP data
  • Proficiency with non-traditional network traffic (e.g. Command and Control)
  • Proficiency with preserving evidence integrity according to standard operating procedures or national standards
  • Proficiency with virtualized environments
Desired Certifications:
  • DoD 8140.01 IAT Level II, IASAE II, CSSP Analyst, GCIA, GCIH, CSSP Analyst/CSSP Incident Responder, CEH
  • SANS GIAC GNFA preferred
Required Education: Bachelor of Science in Computer Science, Cyber Security, Computer Engineering, or related degree; or High School Diploma and 7-9 years of network investigations experience

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