Threat Intelligence Sharing: Collaborative Security

Threat intelligence sharing enables organizations to benefit from collective security knowledge. When companies share information about attacks, indicators of compromise, and threat actor tactics, everyone's defenses improve.

What is Threat Intelligence Sharing?

Threat intelligence sharing is the exchange of security information between organizations, including IP addresses, domains, file hashes, attack techniques, and contextual analysis of threats. This collaborative approach helps organizations defend against attacks that have targeted others.

Sharing can occur through formal Information Sharing and Analysis Centers (ISACs), automated feeds, or direct partnerships between security teams. The goal is to transform individual observations into collective defensive capability.

Benefits of Sharing

Organizations that participate in threat intelligence sharing gain significant advantages:

Types of Shared Intelligence

Different categories of threat intelligence serve different defensive purposes:

• Indicators of Compromise - IP addresses, domains, file hashes, and URLs associated with malicious activity.
• Tactics, Techniques, Procedures - Descriptions of how threat actors operate, mapped to frameworks like MITRE ATT&CK.
• Vulnerability Intelligence - Information about exploited vulnerabilities and patches before public disclosure.
• Threat Actor Profiles - Analysis of specific groups including motivations, capabilities, and targeting preferences.

Implementing Threat Sharing

Start by consuming threat intelligence feeds before contributing. Integrate feeds with your SIEM, firewall, and security tools to automate blocking and alerting on known threats.

When ready to contribute, establish policies for what can be shared and implement data sanitization to protect sensitive information. Use standard formats like STIX/TAXII for interoperability with other organizations.