The [[ZKP/Data Marketplace/Intro|marketplace]] operates under a defined threat model addressing four key security concerns: ## Data Integrity [[Proof of Space (PoSp)]] mechanisms implemented through custom pallets ensure dataset availability and tamper resistance through cryptographic storage proofs, with 99.9% uptime as established in the base layer specifications [87,99]. ## [[ZKP/Data Marketplace/Tokenized Datasets/Tiered Access Control|Access Control]] [[ZKP/Data Marketplace/Technical Basis/Cryptographic Foundations/Lifecycle of zk-SNARKs|zk-SNARKs]] provide cryptographic verification of access rights through the verification infrastructure without revealing user balances or permissions, maintaining privacy while ensuring security [77]. ## Smart Contract Security Contract-level protections follow established best practices for [[ZKP/ZKP Base Layer/ZKP Blockchain/Technical Build Application Layer/Smart Contract Execution Environments EVM|EVM pallet environments,]] including access controls and event logging through the event system for transparency [80, 85]. ## Privacy Guarantees Beyond basic encryption, the [[ZKP/Data Marketplace/Technical Basis/Cryptographic Foundations/Security Guarantees|system's zero-knowledge architecture]] ensures that sensitive information remains protected during verification processes, addressing the [[ZKP/Data Marketplace/Security and Privacy/Security and Privacy Foundations|fundamental privacy challenges]] of decentralized data sharing [77]. The security framework integrates with the marketplace's governance model through the democracy pallet, allowing [[ZKP/Data Marketplace/Decentralized Governance/Decentralized Governance via Data DAOs|Data DAOs]] to establish and enforce quality standards while maintaining the system's [[ZKP/Data Marketplace/Technical Basis/Cryptographic Foundations/Security Guarantees|cryptographic guarantees.]] This multi-layered approach creates a balanced security architecture that protects both individual participants and the ecosystem as a whole. See also: [[ZKP/Data Marketplace/Scalability & Optimization/Scalability and Optimization Challenges|Scalability and Optimization Challenges]]