> For the complete documentation index, see [llms.txt](https://xdocs.ngd.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xdocs.ngd.network/security/anti-mev-protection.md). # Anti-MEV Protection **Maximal Extractable Value (MEV)** refers to the strategies employed by miners or validators to manipulate transaction order—by adding, removing, or reordering transactions—when producing new blocks. This practice has led to significant financial losses across the industry. To address the adverse effects of malicious MEV on transaction fairness and network efficiency, **Neo X** introduces an advanced **Anti-MEV** mechanism. This solution is designed to mitigate malicious transaction reordering and front-running attacks, ensuring a more secure and equitable transaction process. The Anti-MEV mechanism in Neo X is built upon: * **Decentralized Key Generation (DKG)**: Ensures a trustless and distributed key generation process. * **Threshold Encryption (TPKE)**: Enables secure transaction confidentiality. * **Enhanced dBFT Consensus Algorithm**: Implements a new pre-commit phase to maintain fair transaction ordering. By leveraging **Envelope Transactions**, users can encrypt their transactions, ensuring that they are not exposed to MEV attacks during the consensus process. The following sections and [Neo X's TPKE library](https://github.com/bane-labs/neox-tpke-lib) will help you to understand and build with this unique infrastructure. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://xdocs.ngd.network/security/anti-mev-protection.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.