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Network Forensics and Cybercrime

Network Evidence Sources

Network forensics examines digital evidence from network communications. Key evidence sources include: firewall logs (recording allowed and blocked connections by IP address, port, and timestamp), proxy server logs (recording URLs visited by internal users), DNS query logs (showing domain name lookups), email server logs (sender, recipient, timestamps, IP addresses), intrusion detection/prevention system (IDS/IPS) alerts, packet captures (full content recording of network traffic using tools like Wireshark or tcpdump), NetFlow records (metadata about network sessions without content—source/destination IPs, ports, bytes transferred, duration), and authentication logs (login successes, failures, source IPs). Network evidence is critical for investigating data breaches, insider threats, and cyberattacks, establishing who communicated with whom, when, and what data was transferred.

Network Forensics and Cybercrime

Network Evidence Sources

Network forensics examines digital evidence from network communications. Key evidence sources include: firewall logs (recording allowed and blocked connections by IP address, port, and timestamp), proxy server logs (recording URLs visited by internal users), DNS query logs (showing domain name lookups), email server logs (sender, recipient, timestamps, IP addresses), intrusion detection/prevention system (IDS/IPS) alerts, packet captures (full content recording of network traffic using tools like Wireshark or tcpdump), NetFlow records (metadata about network sessions without content—source/destination IPs, ports, bytes transferred, duration), and authentication logs (login successes, failures, source IPs). Network evidence is critical for investigating data breaches, insider threats, and cyberattacks, establishing who communicated with whom, when, and what data was transferred.