RS.CO-5: External Cybersecurity Information Sharing
External cybersecurity information sharing amplifies your organization's threat intelligence and situational awareness beyond internal walls. RS.CO-5 requires establishing voluntary mechanisms to exchange security insights with external stakeholders, industry peers, and threat intelligence communities. For SMBs, this control transforms isolated security efforts into collaborative defense.
What this means
This control requires your organization to actively participate in voluntary information sharing programs with external parties—including industry partners, ISACs (Information Sharing and Analysis Centers), government agencies, and vendors. The goal is to gain broader visibility into emerging threats, vulnerabilities, and attack patterns that could impact your business. Information sharing must be structured, reciprocal where possible, and governed by clear policies that protect sensitive data while maximizing collective cybersecurity posture.
How to comply
- 1.Identify relevant external stakeholders for your industry (ISACs, threat intelligence platforms, industry consortiums, peer networks)
- 2.Establish information sharing policies that define what data can be shared, with whom, and under what conditions
- 3.Implement secure channels for sharing threat intelligence and incident data with trusted external parties
- 4.Join industry-specific information sharing communities or threat intelligence networks relevant to your sector
- 5.Document all external information sharing agreements and define roles and responsibilities
- 6.Create feedback loops to incorporate external threat intelligence into your internal security operations
- 7.Audit and monitor information sharing activities to ensure compliance with agreements and privacy requirements
- 8.Train staff on the value of external sharing and how to participate appropriately without disclosing confidential data
Evidence auditors look for
- Documented information sharing agreements with ISACs or threat intelligence partners
- Membership records in industry-specific information sharing communities
- Incident reports or threat data contributed to external platforms or peer networks
- Information sharing policies specifying data types, recipients, and approval processes
- Logs showing participation in threat intelligence briefings or collaborative threat monitoring
- Meeting minutes from external cybersecurity coordination sessions
- Documented process for incorporating external threat intelligence into risk management
- Records of shared vulnerabilities, indicators of compromise, or attack patterns with external stakeholders
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automates tracking of your information sharing activities, maintains current agreements with external partners, and consolidates external threat intelligence feeds into a single compliance dashboard—eliminating manual tracking and ensuring RS.CO-5 evidence is always audit-ready.
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