Network Based Systems Analyst III

Arsiem•Arlington, VA

11d•Onsite

About The Position

ARSIEM Corporation is seeking a Cyber Network Defense Analyst (CNDA) to join their team. This role involves monitoring network activity, analyzing it for suspicious behavior, and identifying and reporting potential threats to protect information, systems, and networks. The position supports a government client in Arlington, VA. ARSIEM is committed to fostering a trusted partnership with government clients, providing reliable and cutting-edge technical solutions with opportunities for career growth and impact.

Requirements

BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 7-9 years of network investigations experience.
5+ years of directly relevant experience in network investigations
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

Nice To Haves

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
DoD 8140.01 IAT Level II, IASAE II, CSSP Analyst, GCIA, GCIH, CSSP Analyst/CSSP Incident Responder, CEH SANS GIAC GNFA preferred

Responsibilities

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