Question 1

What is a threat intelligence feed and why should I use one?

Accepted Answer

A threat intelligence feed is a continuously updated stream of indicators of compromise (IOCs) such as malicious IP addresses, domains, URLs, and file hashes identified by security researchers and organizations worldwide. Using threat intelligence feeds helps you proactively block known threats, detect compromised systems in your network, reduce false positives in security alerts, and stay informed about emerging attack campaigns. By aggregating multiple feeds, you get broader coverage of the threat landscape than any single source can provide.

Question 2

What are indicators of compromise (IOCs) and what types does this tool support?

Accepted Answer

Indicators of Compromise (IOCs) are forensic artifacts or evidence that suggest a system has been compromised by an attacker. This tool supports multiple IOC types: IPv4 and IPv6 addresses (malicious servers, C&C infrastructure), domain names (phishing sites, malware distribution), URLs (specific malicious web pages), file hashes (MD5, SHA-1, SHA-256, SHA-512 for malware samples), and email addresses (phishing senders). Each IOC type helps detect different aspects of cyber threats.

Question 3

What is STIX format and why is it important for threat intelligence?

Accepted Answer

STIX (Structured Threat Information eXpression) is a standardized language developed by MITRE and OASIS for describing cyber threat information in a machine-readable format. STIX 2.1 uses JSON to represent threat data including indicators, threat actors, attack patterns, and relationships between entities. It's important because it enables automated sharing and integration of threat intelligence across different security tools (SIEM, SOAR, firewalls) without custom parsers. STIX exports from this tool can be directly imported into enterprise security platforms for automated threat detection and response.

Question 4

How does IOC deduplication work and why is it necessary?

Accepted Answer

IOC deduplication identifies and consolidates duplicate indicators that appear in multiple threat feeds. It's necessary because the same malicious IP or domain often appears in several feeds simultaneously, and without deduplication, you'd process the same threat multiple times, wasting resources and creating confusion. Our deduplication engine uses exact matching (same IP/hash/domain), normalized matching (different formats but same indicator), and smart merging that combines confidence scores, aggregates tags from all sources, preserves complete source attribution, and maintains the highest severity classification.

Question 5

Can I import these IOCs into my firewall or SIEM?

Accepted Answer

Yes! This tool provides multiple export formats specifically designed for security tool integration. Export to CSV for manual import into legacy systems or spreadsheet analysis. Use JSON format for custom scripts and modern API integrations. Export STIX 2.1 bundles for direct import into SIEM platforms (Splunk, QRadar, Sentinel), SOAR platforms (Cortex XSOAR, Phantom), and threat intelligence platforms. For firewalls, export IP-based IOCs as simple text lists for blocklist imports.

Question 6

What's the difference between a blocklist, watchlist, and allowlist collection?

Accepted Answer

Collections organize IOCs for different security actions. A blocklist contains IOCs that should be immediately blocked at your security perimeter (firewall, proxy, email gateway) to prevent known threats from reaching your network. A watchlist contains IOCs that require monitoring and alerting but not automatic blocking—these are suspicious indicators under investigation. An allowlist contains known-good indicators that should be excluded from blocking rules to prevent false positives (e.g., legitimate CDN IPs, business partner domains).

Threat Intelligence Feed Aggregator

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