CI-ISAC membership is designed to be accessible to all organisations vital to the Australian way of life. Primarily focussed on Critical Infrastructure, and their supporting supply chains, membership is also available to select organisations outside of the prescribed SOCI sectors.
Critical Infrastructure Sectors
CI-ISAC primarily focuses on organisations within the following CI sectors and material suppliers, however our constitution allows for select organisations from outside of ‘core’ critical infrastructure to join CI-ISAC, subject to review.
Communications
- a critical telecommunications asset
- a critical broadcasting asset
- a critical domain name system
Data storage or processing
- a critical data storage or processing asset
Energy
- a critical electricity asset
- a critical gas asset
- a critical energy market operator asset
- a critical liquid fuel asset
Financial services and markets
- a critical banking asset
- a critical superannuation asset
- a critical insurance asset
- a critical financial market infrastructure asset
Food & Grocery
- a critical food and grocery asset
Healthcare and Medical
- a critical hospital
Higher Education and Research
- a critical education asset
Space Technology
- a critical space asset
Transport
- a critical port
- a critical freight infrastructure asset
- a critical freight services asset
- a critical public transport asset
- a critical aviation asset
Water and Sewerage
- a critical water asset
Government
- a critical government asset
Material Suppliers
- a critical technology asset
- a critical managed service provider asset
- a critical managed security service provider asset
- a critical supplier required to ensure the ongoing operations of a critical infrastructure asset
Membership Tiers & Fees
We believe that collective cyber defence is most effective when everyone has a seat at the table. Our membership tiers are structured to reflect the diverse sizes and resources of organisations within each sector, ensuring that smaller entities can benefit from lower fees, enabling access to threat intelligence and supporting resources.
An updated tier structure and pricing model has been introduced in 2026, reflecting the significant capability enhancements we have already implemented to deliver protection and insight to members. Existing benefits will be further improved this year via additional technical uplifts.
Upcoming capabilities include cyber exercising, attack surface and leaked credential monitoring. We have evolved beyond simple sharing to become an extension of your security teams, with members citing hours saved as the biggest benefit of membership.
| Tier | Revenue / Budget | Interim (2026) | Target (2027) |
|---|---|---|---|
| Tier 1 | >$5B | $45,000 | $75,000 |
| Tier 2 | $1B – $5B | $35,000 | $50,000 |
| Tier 3 | $500M – $1B | $27,500 | $35,000 |
| Tier 4 | $250M – $500M | $20,000 | $25,000 |
| Tier 5 | $100M – $250M | $15,000 | $18,000 |
| Tier 6 | $50M – $100M | $10,000 | $12,500 |
| Tier 7 | $10M – $50M | $5,000 | $7,500 |
| Tier 8 | <$10M | $1,500 | $2,500 |
* NFPs and Public Health entities remain eligible for staggered discounts (15%–30%).
For any additional queries, please contact us
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