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Training Camp • Cybersecurity Glossary
Governance rules defining what data may be shared, with whom, and how it must be protected, internally and with partners or ISACs.
Information Sharing Policy Definition: Governance rules defining what data may be shared, with whom, and how it must be protected, internally and with partners or ISACs.
An information sharing policy is a set of governance rules and procedures that define what information may be shared, with whom, under what conditions, and how it must be protected during exchange. It balances the operational need to share data, internally and with partners, regulators, or threat-intelligence communities, against the obligation to safeguard confidentiality, integrity, and availability.
The policy classifies information by sensitivity, ties each class to handling and disclosure rules, and specifies approval authorities, recipient vetting, and protective controls such as encryption, access restrictions, NDAs, and data-loss-prevention enforcement. In threat-intelligence contexts it adopts handling conventions like the Traffic Light Protocol (TLP), which marks data RED, AMBER, GREEN, or CLEAR to govern redistribution, and aligns with frameworks such as ISO 27001 and NIST SP 800-150 on cyber threat information sharing.
This matters because uncontrolled sharing is a major cause of data exposure, while over-restriction starves defenders and partners of intelligence they need. A clear policy prevents accidental leakage of regulated or proprietary data, ensures legal and contractual compliance (GDPR, HIPAA), and enables safe participation in collaborative defense, such as exchanging indicators of compromise with an ISAC. Without it, employees make ad hoc disclosure decisions, sensitive data ends up in the wrong hands, and the organization loses the trust required for partner sharing.
For example, a hospital's information sharing policy permits its SOC to share malware indicators with the Health-ISAC under TLP:AMBER, meaning recipients may act on the data internally but not republish it. The same policy forbids sharing any patient-identifying details and requires legal review and encryption before transmitting datasets to external researchers, so the security team gains community intelligence while protected health information stays compliant and contained.
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