---
title: "Discussion on \"Dead Code Destroyed a $1.5B Company in 45 Minutes — Knight Capital\" | Hashnode"
description: "Discussion on \"Dead Code Destroyed a $1.5B Company in 45 Minutes — Knight Capital\". On August 1, 2012, Knight Capital lost $440 million in 45 minutes. Not from a hack. From a deployment error.\nDead code from 2003 woke up because one server out of eight missed an update. The deployment script failed silently and reported success.\nFou..."
url: "https://hashnode.com/posts/dead-code-destroyed-a-15b-company-in-45-minutes-knight-capital/69cfea08331df036ef7a9d3f"
---

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# [Dead Code Destroyed a $1.5B Company in 45 Minutes — Knight Capital](https://storyengine.hashnode.dev/dead-code-destroyed-a-15b-company-in-45-minutes-knight-capital?utm_source=hashnode&utm_medium=feed)

On August 1, 2012, Knight Capital lost $440 million in 45 minutes. Not from a hack. From a deployment error. Dead code from 2003 woke up because one server out of eight missed an update. The deployment script failed silently and reported success. Fou...

Apr 3 · 2 min read · storyengine.hashnode.dev  
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-   [#knight-capital](https://hashnode.com/tag/knight-capital)
-   [#440-million-bug](https://hashnode.com/tag/440-million-bug)
-   [#dead-code](https://hashnode.com/tag/dead-code)
-   [#kill-switch](https://hashnode.com/tag/kill-switch)
-   [#software-deployment](https://hashnode.com/tag/software-deployment)

## 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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