The integration mechanism between threat intelligence and a Security Information and Event Management (SIEM) system involves the automated or manual ingestion, normalization, and correlation of external threat data with internal security event logs to enhance detection, investigation, and response capabilities.
Threat Intelligence Collection
Threat intelligence feeds provide information about known malicious indicators (e.g., IP addresses, domains, hashes, file behaviors) from sources like commercial providers, open-source feeds, or government agencies.
Data Ingestion into SIEM
The SIEM system pulls or receives threat intelligence data via APIs, STIX/TAXII protocols, or file uploads. The data is normalized into a common format (e.g., MITRE ATT&CK tactics, IP reputation lists).
Correlation & Enrichment
The SIEM correlates incoming logs (e.g., firewall, endpoint, network traffic) with threat intelligence indicators. For example, if an internal system communicates with a known malicious IP, the SIEM generates an alert.
Alerting & Response
When a match is found, the SIEM triggers alerts, prioritizes incidents, and may automate responses (e.g., blocking IPs via firewalls, isolating endpoints).
A company’s SIEM receives a threat intelligence feed listing IPs associated with recent phishing campaigns. When an employee’s workstation connects to one of these IPs, the SIEM detects the match, correlates it with the user’s login activity, and alerts the security team to investigate potential compromise.
For threat intelligence integration, Tencent Cloud Security Product Suite (e.g., T-Sec Threat Intelligence Platform) provides real-time threat data that can be integrated with Tencent Cloud Security Information and Event Management (SIEM) solutions (like T-Sec SOC) to enhance detection and response. The platform supports automated threat feed updates, correlation rules, and incident workflows.