Threat Intelligence Guide 2024: Types, Process, Feeds & Best Practices

Threat intelligence transforms raw security data into actionable insights enabling proactive defense against cyber threats. Rather than reactively responding to attacks, threat intelligence empowers organizations to anticipate threats, prioritize defenses, and hunt for adversaries before significant damage occurs. This guide covers threat intelligence fundamentals, the intelligence lifecycle, types of threat intelligence, sources and feeds, and building effective threat intelligence programs.

What is Threat Intelligence?

Threat intelligence (also cyber threat intelligence or CTI) is evidence-based knowledge about existing or emerging threats to assets, including context, mechanisms, indicators, implications, and actionable advice. Threat intelligence enables informed security decisions by answering: Who is targeting us? What are their capabilities? How do they operate? What should we prioritize?

Types of Threat Intelligence

Strategic Threat Intelligence

Audience: Executives, board members, non-technical stakeholders

Content:

• High-level threat landscape trends
• Risk assessments and business impact
• Threat actor motivations and capabilities
• Geopolitical cyber threat developments

Use case: Security budget allocation, risk management decisions

Tactical Threat Intelligence

Audience: Security architects, engineers

Content:

• Attacker TTPs (tactics, techniques, procedures)
• Attack vectors and methods
• Vulnerability exploitation patterns
• Defense recommendations

Use case: Security control selection, architecture decisions

Operational Threat Intelligence

Audience: SOC analysts, incident responders

Content:

• Specific attack campaigns
• Threat actor infrastructure
• Attack timing and patterns
• Attribution details

Use case: Threat hunting, incident response

Technical Threat Intelligence

Audience: Security tools (SIEM, IDS, firewalls)

Content:

• Indicators of Compromise (IOCs): IPs, domains, file hashes
• Malware signatures
• Attack patterns
• Machine-readable threat data

Use case: Automated blocking, detection rules

The Threat Intelligence Lifecycle

Phase 1: Planning and Direction

• Define intelligence requirements
• Identify priority intelligence questions
• Determine scope and objectives

Phase 2: Collection

• Gather data from multiple sources
• Internal logs and security events
• Open-source intelligence (OSINT)
• Commercial threat feeds
• Information sharing communities

Phase 3: Processing

• Normalize data into consistent format
• Enrich with context
• Correlate across sources
• Filter noise and false positives

Phase 4: Analysis

• Identify patterns and trends
• Assess threat relevance to organization
• Determine threat actor attribution
• Develop actionable recommendations

Phase 5: Dissemination

• Deliver intelligence to appropriate stakeholders
• Tailor format to audience (technical vs executive)
• Provide actionable recommendations
• Enable security control updates

Phase 6: Feedback

• Evaluate intelligence effectiveness
• Refine requirements based on needs
• Improve processes and sources

Threat Intelligence Sources

Open-Source Intelligence (OSINT)

• Security blogs and research
• Vulnerability databases (CVE, NVD)
• Public threat feeds (AlienVault OTX)
• Security news and advisories
• Social media monitoring

Commercial Threat Feeds

• Recorded Future: Comprehensive threat intelligence
• Mandiant Advantage: APT intelligence
• CrowdStrike Falcon Intelligence: Real-time threat data
• Anomali ThreatStream: Aggregated feeds

Information Sharing Communities

• ISACs: Industry-specific sharing (FS-ISAC, H-ISAC)
• CISA: Government threat bulletins
• MISP: Open-source threat sharing platform

Conclusion

Threat intelligence transforms security operations from reactive firefighting into proactive threat-informed defense. Organizations leveraging threat intelligence detect threats faster, prioritize defenses effectively, and hunt for adversaries before damage occurs.

subrosa provides threat intelligence services including threat intelligence program development, managed threat hunting, and threat intelligence integration with security operations. Schedule a consultation.