A Security Data Redistribution Network (SDRN) is a dedicated network that redistributes security data. An SDRN expands the SIE infrastructure to allow other trusted entities to use the same tools and technologies to run their own infrastructure to exchange security related information.

There are two instances of an SDRN:

• A Private SDRN (P-SDRN): An SDRN that is run by a private operator that aggregates data from third parties. SIE@ISC is a P-SDRN operated by ISC.
• An Internal SDRN (I-SDRN): An SDRN that is operated by an entity (ISP, enterprise, government, etc.) that aggregates first party data gathered internally.

RSF recognizes the need of the industry to create islands of trust due to legal or privacy issues surrounding whom data can be shared with. If at some time in the future the legal and privacy landscapes get modified, these distinct SDRN instances have the capability to exchange information using the same tools and technologies.