--- title: What is an IDOR? Google and Uber got hacked this way. description: An introduction to Insecure Direct Object Reference (IDOR) vulnerabilities, demonstrated through a live lab where changing a numeric user ID in a URL exposes... canonical: https://daily.dev/posts/what-is-an-idor-google-and-uber-got-hacked-this-way--pxaxgcsw3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What is an IDOR? Google and Uber got hacked this way. | daily.dev og:description: An introduction to Insecure Direct Object Reference (IDOR) vulnerabilities, demonstrated through a live lab where changing a numeric user ID in a URL exposes... og:url: https://daily.dev/posts/what-is-an-idor-google-and-uber-got-hacked-this-way--pxaxgcsw3 og:image: https://api.daily.dev/og/posts/pXaXGcSW3.png og:image:alt: What is an IDOR? Google and Uber got hacked this way. 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. # What is an IDOR? Google and Uber got hacked this way. **[David Bombal](https://daily.dev/sources/davidbombal)** · 2 min read · 0 upvotes · 0 comments ## Summary An introduction to Insecure Direct Object Reference (IDOR) vulnerabilities, demonstrated through a live lab where changing a numeric user ID in a URL exposes another user's private data. A bug bounty hunter confirms these vulnerabilities are still actively found in production systems at major companies like Google, Uber, and Meta in 2026, often hidden in lesser-visited API endpoints. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OSSEC: IDOR vulnerability no more — The easiest way for you to verify your apps yourself.](https://daily.dev/posts/ossec-idor-vulnerability-no-more-the-easiest-way-for-you-to-verify-your-apps-yourself--im32nx5sz) · ITNEXT · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security) [View this post on daily.dev](https://daily.dev/posts/what-is-an-idor-google-and-uber-got-hacked-this-way--pxaxgcsw3) ```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":"What is an IDOR? 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