GIAC GCIA Exam : GIAC Certified Intrusion Analyst

  • Exam Code: GCIA
  • Exam Name: GIAC Certified Intrusion Analyst
  • Updated: Oct 06, 2026
  • Q & A: 508 Questions and Answers

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The GIAC GCIA certification exam targets those individuals who want to leverage their knowledge on host monitoring, intrusion detection, and traffic analysis. This test is also suitable for any practitioner who occupies roles dedicated to intrusion detection. Then, system analysts or network engineers are interested in taking this certification test. Another category of specialists is formed of network administrators, security analysts, and hands-on security managers. Apart from them, any individual who wants to consolidate his/her skills in monitoring and configuring systems dedicated to intrusion detection, or interpret different data for network traffic analysis can be a target candidate for this GCIA test.

Reference: http://www.giac.org/certification/certified-intrusion-analyst-gcia

GCIA Certified Professional Salary

  • England: £67995
  • Europe:€79795
  • United States: $88,500
  • India:₹628736

GIAC GCIA Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Application Protocol Analysis20%- Anomaly detection in application-layer communications
- HTTP, DNS, SMTP, FTP and SSH traffic analysis
- Data exfiltration and tunneling indicators
Topic 2: Traffic Analysis & Protocol Fundamentals25%- IP, IPv6, TCP, UDP, ICMP header analysis
- TCP/IP model and link layer operations
- Protocol state machines and normal behavior
- Packet fragmentation, TTL, checksums and anomalies
Topic 3: Network Forensics & Incident Analysis5%- Identifying attack vectors and compromise indicators
- Reconstructing incidents from captures and logs
Topic 4: Traffic Analysis Tools & Techniques15%- Full packet capture and log correlation
- Flow analysis with SiLK and NetFlow/IPFIX
- Wireshark, tcpdump, filter creation and packet inspection
Topic 5: IDS/IPS Concepts & Signatures20%- Detection logic, evasion and correlation
- IDS/IPS architecture, deployment and tuning
- Snort and Zeek rule writing and optimization
Topic 6: Advanced Intrusion Detection15%- Detecting APTs, lateral movement and beaconing
- Threat intelligence mapping and MITRE ATT&CK
- Covert channels and encrypted traffic analysis

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