---
title: "Discussion on \"One File Satisfies 8.5 Million — The CrowdStrike Disaster\" | Hashnode"
description: "Discussion on \"One File Satisfies 8.5 Million — The CrowdStrike Disaster\". On July 19, 2024, CrowdStrike pushed a routine config file update to 8.5 million Windows machines.\nThe file had 21 data fields. The parser expected 20. No bounds check. No integration test.\nResult: the largest IT outage in history. $5.4 billion in Fo..."
url: "https://hashnode.com/posts/one-file-satisfies-85-million-the-crowdstrike-disaster/69cfe5c709b54b73c100de1d"
---

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# [One File Satisfies 8.5 Million — The CrowdStrike Disaster](https://storyengine.hashnode.dev/one-file-satisfies-85-million-the-crowdstrike-disaster?utm_source=hashnode&utm_medium=feed)

On July 19, 2024, CrowdStrike pushed a routine config file update to 8.5 million Windows machines. The file had 21 data fields. The parser expected 20. No bounds check. No integration test. Result: the largest IT outage in history. $5.4 billion in Fo...

Apr 3 · 1 min read · storyengine.hashnode.dev  
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-   [#blue-screen-of-death](https://hashnode.com/tag/blue-screen-of-death)
-   [#bsod](https://hashnode.com/tag/bsod)
-   [#crowdstrike-disaster](https://hashnode.com/tag/crowdstrike-disaster)
-   [#crowdstrike-outage](https://hashnode.com/tag/crowdstrike-outage)
-   [#software-bug](https://hashnode.com/tag/software-bug)

## Written by

[Phuoc Nguyen Dang](https://hashnode.com/@phuocnd)

@phuocnd · Ho Chi Minh City, Vietnam

  
[View profile](https://hashnode.com/@phuocnd)

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