--- title: The days of assuming another company’s breach is someone... description: The median data breach now exposes 542 other organizations beyond the original victim, up from 482 last year, according to Lab 1's 2026 Anatomy of a Breach... canonical: https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The days of assuming another company’s breach is someone else’s problem are over | daily.dev og:description: The median data breach now exposes 542 other organizations beyond the original victim, up from 482 last year, according to Lab 1's 2026 Anatomy of a Breach... og:url: https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu og:image: https://api.daily.dev/og/posts/8Ve450knU.png og:image:alt: The days of assuming another company’s breach is someone else’s problem are over 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. # The days of assuming another company’s breach is someone else’s problem are over **[CSO Online](https://daily.dev/sources/csoonline)** · 5 min read · 0 upvotes · 0 comments ## Summary The median data breach now exposes 542 other organizations beyond the original victim, up from 482 last year, according to Lab 1's 2026 Anatomy of a Breach Report. Breach size also grew: median exposure hit 29.8GB and 32,734 files, up 122% and 45% respectively. Of 328 million breached files analyzed, 44% held financial data and 9% held HR data, while private cryptographic keys appeared in about 15% of incidents. Some threat actor groups use AI to index stolen datasets and sell this 'indexing-as-a-service' to other attackers, who mine files for sanctions correspondence, patient records, and buyback data, and follow-on fraud can land on the suppliers, customers, and partners named inside the files. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How many organizations are typically affected when one company suffers a data breach today A median breach exposes 542 other organizations beyond the initially breached victim, up from 482 the previous year, according to Lab 1's 2026 Anatomy of a Breach Report. The report analyzed 328 million exposed files across 2,089 breached datasets, finding 13,436 unique organizations exposed through incidents occurring between 2025 and 2026. _Track how breach blast radius and third-party exposure keep growing by following security coverage on daily.dev._ ### What is indexing-as-a-service in the context of data breaches Indexing-as-a-service is a criminal offering, first spotted in March 2026, that uses AI to sort stolen breach data into monetizable categories. It classifies documents, maps relationships, identifies damaging files, estimates legal and regulatory exposure, and calculates 'optimal' ransom demands, and is sold by advanced threat actor groups to other criminals. _Developers securing data pipelines can keep up with emerging extortion tactics like this via daily.dev._ ### What percentage of breached files typically contain financial or HR data that criminals can exploit Around 44% of breached files contain financial data such as banking details, tax identifiers, and invoicing information, while 9% contain HR data including payroll records, employment contracts, and identity documents. Private cryptographic keys appeared in about 15% of breach incidents, according to Lab 1's analysis of 328 million exposed files. _Teams assessing breach exposure risk can follow data security research like this on daily.dev._ ## Similar posts on daily.dev - [Breaches Up, Number of Victims Down, Impact Stronger](https://daily.dev/posts/breaches-up-number-of-victims-down-impact-stronger-orblzvykr) · Security Boulevard · 0 upvotes · 0 comments - [Hacks, thefts and disruption: The worst data breaches of 2025](https://daily.dev/posts/hacks-thefts-and-disruption-the-worst-data-breaches-of-2025-kaqhfgqva) · TechCrunch · 1 upvotes · 0 comments - [Analysis: Blast Radius for Third-Party Breaches Bigger Than Reported](https://daily.dev/posts/analysis-blast-radius-for-third-party-breaches-bigger-than-reported-ngttobjx5) · Security Boulevard · 0 upvotes · 0 comments - [80\+ Cybersecurity Statistics for 2025](https://daily.dev/posts/80-cybersecurity-statistics-for-2025-ubc4cl4tq) · Spacelift · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#ransomware](https://daily.dev/tags/ransomware), [#data-breach](https://daily.dev/tags/data-breach), [#ai-security](https://daily.dev/tags/ai-security) [View this post on daily.dev](https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu) ```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":"The days of assuming another company’s breach is someone else’s problem are over","url":"https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu"},"datePublished":"2026-10-27T08:31:13.640Z","dateModified":"2026-10-27T08:31:42.330Z","description":"The median data breach now exposes 542 other organizations beyond the original victim, up from 482 last year, according to Lab 1's 2026 Anatomy of a Breach...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/17d1b50283adf30a8f04e6c6ac13c81a?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/17d1b50283adf30a8f04e6c6ac13c81a?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"CSO Online","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":"CSO Online","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/98667e4b5cac46cf9c470819c6cf71cd","url":"https://daily.dev/sources/csoonline"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,ransomware,data-breach,ai-security","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"CSO Online","item":"https://daily.dev/sources/csoonline"},{"@type":"ListItem","position":3,"name":"The days of assuming another company’s breach is someone else’s problem are over"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/the-days-of-assuming-another-company-s-breach-is-someone-else-s-problem-are-over-8ve450knu#faq","mainEntity":[{"@type":"Question","name":"How many organizations are typically affected when one company suffers a data breach today","acceptedAnswer":{"@type":"Answer","text":"A median breach exposes 542 other organizations beyond the initially breached victim, up from 482 the previous year, according to Lab 1's 2026 Anatomy of a Breach Report. 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