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Cyber Defense Analyst III

San Antonio, TX

Essential Job Functions

  • Use information collected from a variety of sources to monitor network activity and analyze it for evidence of anomalous behavior. 
  • Identify, triage and report events that occur in order to protect data and information systems. 
  • Recommend proactive security measures. 
  • Notify stakeholders of suspected incidents, articulating technical information surrounding the suspected incident. 
  • Implement mitigations in accordance with cyber incident response plan.
  • Conduct PCAP analysis. 
  • Perform advanced manual analysis to hunt previously unidentified threats. 
  • Demonstrated ability to analyze and identify network and host-based security threats. 
  • Understanding of snort filters and their use in IDS alerts. 
  • Understanding of network hardening methodologies. 
  • Working knowledge of enterprise-level IDS/IPS and firewall topologies. 
  • Provide subject matter expert (SME)-level analysis of advanced adversarial Tactics, Techniques and Procedures (TTPs). 
  • Develop and deploy effective threat identifying signatures and countermeasures to various sensors and intrusion prevention systems. 
  • Lead and mentor team members as a technical expert. 

Minimum Required Qualifications

  • Due to the nature of this position and the information that employees will be required to access, U.S. Citizenship is required.
  • Required Security Clearance: TS/SCI with FS Poly.
  • Required High School Diploma.
  • 8 years of demonstrated experience as a Cyber Defense Analyst. 2 years of experience can be substituted by a technical Bachelor’s Degree. 
  • Two years of experience with TCP/IP. 
  • Two years of experience with tcpdump or Wireshark/tshark. 
  • Requires GIAC Global Certified Incident Handler (GCIH) certification.

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