Network Security Specialist

4 weeks ago

Arlington, Virginia, United States Base One Technology Full time
Job Title: Network Security Specialist

Our client, a leading technology company, is seeking a highly skilled Network Security Specialist to join their team. As a Network Security Specialist, you will be responsible for investigating network breaches, developing mitigation plans, and working collaboratively with cross-functional teams to ensure the security and integrity of our client's network.

Responsibilities:
  • Assist in coordinating teams in preliminary incident response investigations
  • Interface with customers while on site
  • Determine appropriate courses of action in response to identified and analyzed anomalous network activity
  • Assess network topology and device configurations, identifying critical security concerns and providing security best practice recommendations
  • Assist with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies
  • Collect network intrusion artifacts and use discovered data to enable mitigation of potential Computer Network Defense incidents
  • Analyze identified malicious network activity to determine weaknesses exploited, exploitation methods, effects on system and information
  • Assist with real-time CND incident handling tasks to support onsite engagements
  • Provide technical briefings as required
Requirements:
  • U.S. Citizenship
  • Active TS/SCI clearance
  • Ability to obtain DHS Suitability
  • 8+ years of directly relevant experience in network investigations
  • In-depth knowledge of CND policies, procedures, and regulations
  • In-depth knowledge of standard protocols – ICMP, HTTP/S, DNS, SSH, SMTP, SMB, NFS, TCP/IP
  • 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
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
Education:

BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 10+ years of network investigations experience.

Desired Certifications:
  • DoD IAT Level II, IASAE II, CSSP Analyst, GCIA, GCIH, CSSP Analyst/CSSP Incident Responder, CEH
  • SANS GIAC GNFA preferred

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