# Security & Compliance Security and privacy are not add-ons within DecentraFit they are the foundation of the entire ecosystem. From the firmware running on each device to the smart contracts verifying Proof-of-Activity, every component is built to protect user data, maintain network integrity, and ensure global compliance from day one. *** #### **End-to-End Encryption** All DecentraFit devices and network layers operate within a fully encrypted framework designed to safeguard both user data and proof transmissions. **Encryption Standards** * **AES-256-GCM** is used for all on-device data storage and off-chain encrypted vaults, offering authenticated encryption with minimal performance overhead. * **Elliptic Curve Cryptography (ECC, Ed25519)** underpins device identity, message signing, and secure communication channels between devices, validators, and the network. * Each device embeds a **secure enclave** that isolates cryptographic operations, preventing key extraction or firmware tampering even under physical compromise. **Data Flow** * Raw biometric data is processed and encrypted on-device before any interaction with the network. * Only **zero-knowledge proofs** and hashed metadata ever leave the device — ensuring that no readable health information is transmitted or stored anywhere outside the user’s control. This guarantees **true end-to-end encryption**, where even DecentraFit cannot access or decrypt personal data. *** #### **Regulatory Alignment** DecentraFit is engineered to meet and exceed global privacy and data-handling standards from inception. * **GDPR (Europe):** User data is treated as personal property. Every proof transaction is anonymized, and any optional data sharing is protected by explicit user consent and reversible permission tokens (Data-Access NFTs). * **HIPAA (United States):** Although DecentraFit operates as a decentralized network rather than a medical provider, all data storage and transmission frameworks comply with HIPAA’s technical safeguards for encryption and access control. * **ISO/IEC 27001:** Internal security processes, validator onboarding, and incident response protocols are modeled on the ISO standard for information security management. Compliance is not a checkbox rather it is baked into the protocol’s architecture.\ By removing centralized databases and introducing user-controlled encryption keys, DecentraFit eliminates most of the traditional vectors that lead to data-privacy violations *** #### **Validator Security & Slashing Policy** Validators form the backbone of the DecentraFit ZK-PoA network.\ To maintain integrity and prevent malicious behavior: * **Stake Requirements:** Validators must bond a minimum DFIT stake to participate. * **Slashing Conditions:** Misbehavior — such as downtime, double signing, or fraudulent proof validation — triggers an automatic slashing mechanism. A percentage of the validator’s stake is burned, and a portion is redistributed to honest validators. * **Disaster Recovery:** Validator state snapshots and proof archives are redundantly stored across multiple geographic regions. In the event of network partition or failure, validators can re-sync using cryptographically verified checkpoints, ensuring no data loss or double counting. * **Redundancy:** Each validator node can mirror its operations across secure enclaves or secondary cloud infrastructure, maintaining uptime and performance consistency. The result is a network that remains **trustless, fault-tolerant, and self-correcting**, without dependence on any single entity or data center. *** #### **Commitment to Continuous Security** Security is not a one-time milestone — it is an ongoing discipline.\ DecentraFit maintains a standing **bug bounty program**, invites academic review of its zero-knowledge implementation, and performs annual re-audits of its core contracts and firmware. > **Our commitment is simple:**\ > Users own their data.\ > Validators uphold the integrity of that data.\ > And every transaction on DecentraFit stands on a foundation of cryptographic trust. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.decentra.fit/security.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.