--- title: Consensus Algorithms: How Computers Agree and Stay Safe... description: Consensus algorithms are essential in decentralized networks, ensuring that computers agree on shared data and valid transactions without a central authority.... canonical: https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Consensus Algorithms: How Computers Agree and Stay Safe Together | daily.dev og:description: Consensus algorithms are essential in decentralized networks, ensuring that computers agree on shared data and valid transactions without a central authority.... og:url: https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar og:image: https://api.daily.dev/og/posts/l9TUTunaR.png og:image:alt: Consensus Algorithms: How Computers Agree and Stay Safe Together og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Consensus Algorithms: How Computers Agree and Stay Safe Together **[Hacker Noon](https://daily.dev/sources/hackernoon)** · 1 min read · 2 upvotes · 0 comments ## Summary Consensus algorithms are essential in decentralized networks, ensuring that computers agree on shared data and valid transactions without a central authority. In simple terms, it's like friends agreeing on changes to a shared document. Attacks like Nothing-at-Stake, Long-Range, Nothing-to-stake, and 51% can compromise network security. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#algorithms](https://daily.dev/tags/algorithms), [#blockchain](https://daily.dev/tags/blockchain), [#crypto](https://daily.dev/tags/crypto), [#decentralization](https://daily.dev/tags/decentralization), [#decentralized](https://daily.dev/tags/decentralized), [#ethereum](https://daily.dev/tags/ethereum), [#proof-of-stake](https://daily.dev/tags/proof-of-stake), [#security](https://daily.dev/tags/security) [View this post on daily.dev](https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Consensus Algorithms: How Computers Agree and Stay Safe Together","url":"https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar"},"datePublished":"2023-07-31T16:35:07.189Z","dateModified":"2023-08-12T02:21:10.658Z","description":"Consensus algorithms are essential in decentralized networks, ensuring that computers agree on shared data and valid transactions without a central authority....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/651e061e01c035f1804f44e3d2e61a4a?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/651e061e01c035f1804f44e3d2e61a4a?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Hacker Noon","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker Noon","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hackernoon","url":"https://daily.dev/sources/hackernoon"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/consensus-algorithms-how-computers-agree-and-stay-safe-together-l9tutunar","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"algorithms,blockchain,crypto,decentralization,decentralized,ethereum,proof-of-stake,security","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker Noon","item":"https://daily.dev/sources/hackernoon"},{"@type":"ListItem","position":3,"name":"Consensus Algorithms: How Computers Agree and Stay Safe Together"}]} ```