Essential Data Gathering Techniques for Security Teams

In cybersecurity and national defense, the ability to gather, analyze, and act on data determines how well an organization can anticipate threats and detect vulnerabilities . Knowing what data to collect and how to interpret it separates reactive security teams from proactive ones.

Open Source Intelligence (OSINT)

OSINT is a vital first step in many investigations. It provides publicly available data that can be leveraged for threat hunting and risk assessments .

Sources: Social media monitoring, public records and databases, dark web surveillance, and news articles .
Goal: To answer the 5Ws (who, what, when, where, why) about a threat or incident .

2. Network Traffic Monitoring and Log Analysis

Real-time monitoring of network traffic is one of the most effective ways to detect cyber threats .

Key Tools: Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS) analyze packets for anomalies .
What to Look For: Unauthorized access attempts, failed logins, brute-force attacks, and unusual traffic spikes that may indicate DDoS attacks. Correlating logs from firewalls and SIEM (Security Information and Event Management) platforms improves threat detection and response times .

3. Threat Intelligence Feeds and External Data

Staying updated on emerging threats requires external threat intelligence feeds .

Sources: Government agencies (CISA, NIST), security vendors, and industry-specific threat-sharing groups .
Use Case: Understanding how attackers use OSINT and other techniques to infiltrate systems, so you can defend against similar tactics .

4. Endpoint and User Behavior Analytics (UEBA)

UEBA applies machine learning to detect anomalies in user activities .

What it Detects: Insider threats attempting to exfiltrate sensitive data, compromised accounts based on deviations from normal behavior, and credential stuffing or session hijacking attempts .
Benefit: Combining UBA with network traffic analysis provides a holistic view of cyber risks .

BUC’s Centre of Security Studies and Centre of Intelligence Management offer comprehensive training on these and other critical data-gathering techniques.