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SecureAI is the European Cybersecurity Competence Centre's dedicated topic for the security of AI systems themselves, and it is worth distinguishing carefully from the much larger population of Horizon Europe topics that apply AI to some other domain.
The scope here is the attack surface of the models: adversarial attacks, backdoor injections and data poisoning are named explicitly, alongside privacy and robustness of AI models and systems more broadly. For teams working on model security, red-teaming, robustness certification, privacy-preserving machine learning or supply-chain integrity of training data, this is a rare topic where that work is the subject rather than a workpackage.
The topic carries a budget of 21,200,000 euros and shares a deadline of 15 September 2026 at 17:00 CET with two sibling topics in the same ECCC call: HORIZON-CL3-2026-02-CS-ECCC-01 on approaches and tools for security in software and hardware development and assessment, budgeted at 20,000,000 euros and itself referencing AI-driven security testing methodologies, and HORIZON-CL3-2026-02-CS-ECCC-03 on advanced cryptographic schemes and high-assurance high-speed cryptographic implementations at 15,000,000 euros.
Applicants weighing where a proposal fits should read all three topic texts, because the boundary between securing AI and using AI to secure software runs directly between topics 02 and 01.
As with all Horizon Europe collaborative topics, proposals are expected from consortia spanning multiple Member States or Associated Countries rather than from single organisations, and evaluation is against the published topic-specific expected outcomes.
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Or search similar grants →According to the current listing, eligibility includes: This is a Horizon Europe collaborative call topic, so standard Horizon Europe eligibility applies: proposals are normally submitted by a consortium comprising at least one independent legal entity established in an EU Member State and at least two further independent legal entities each established in different Member States or Horizon Europe Associated Countries. The announcement reviewed states that full eligibility criteria and all relevant call documents are published on the EU Funding and Tenders Portal rather than restating them, and cybersecurity topics under Cluster 3 frequently carry additional restrictions on participation and on control of participating entities by non-associated third countries, so the topic conditions must be read in full. The deadline for HORIZON-CL3-2026-02-CS-ECCC-02 is 15 September 2026 at 17:00 CET, shared with topics ECCC-01 (20,000,000 euros, software and hardware development security, including AI-driven security testing methodologies) and ECCC-03 (15,000,000 euros, advanced cryptographic schemes). The topic budget is 21,200,000 euros in total across funded projects; the expected EU contribution per project, action type and funding rate are specified in the topic text. Scope covers the security, privacy and robustness of AI models and systems, explicitly including resilience to adversarial attacks, backdoor injections and data poisoning. Proposals are submitted electronically through the EU Funding and Tenders Portal. Confirm the deadline, action type, per-project budget, consortium composition requirements and any security-related participation restrictions directly on the Funding and Tenders Portal topic page before committing to a proposal. Confirm the full requirements in the official notice before applying.
The current listing shows the published figure is a topic budget of 21,200,000 euros (approximately 23,300,000 US dollars at 1.10 dollars to the euro) available across all projects funded under HORIZON-CL3-2026-02-CS-ECCC-02. No per-project minimum or maximum grant is stated in the announcement reviewed. amount_min of 4,400,000 and amount_max of 7,700,000 US dollars (roughly 4,000,000 to 7,000,000 euros) are INFERRED from the typical per-project size of Horizon Europe Cluster 3 cybersecurity Research and Innovation Actions against a topic budget of this size, and are not European Commission figures. The authoritative expected EU contribution per project, the number of projects the Commission intends to fund and the funding rate (normally 100 percent for Research and Innovation Actions, 70 percent for Innovation Actions except for non-profit entities) are stated in the topic conditions on the EU Funding and Tenders Portal and must be read there before budgeting. Verify award ceilings, matching requirements, and allowable costs in the official notice.
The published deadline was September 15, 2026, which has passed. Check the official notice for any future application windows before investing time in a proposal.
Horizon Europe HORIZON-CL3-2026-02-CS-ECCC-02 SecureAI Enhancing the Security, Privacy and Robustness of AI Models and Systems is funded by European Cybersecurity Competence Centre (ECCC) under Horizon Europe Cluster 3 (Civil Security for Society), European Commission. Verify program details on the funder's official page before applying.
Start from the official opportunity page linked in this listing — it carries the sponsor's submission instructions.
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