Insights
Famous bugs, and how testing would have caught them.
Postmortems of the most expensive software failures in history. What broke, what it cost, and what would have prevented it.
Origin story
The first computer bug was a real bug: the 1947 moth that named an entire industry
The story behind the moth in Relay #70, and why debugging still starts with careful evidence.
P1 · Critical
Knight Capital: $440M lost in 45 minutes
A deployment script skipped one of eight servers. By lunch, the firm was insolvent.
P1 · High
CrowdStrike outage: 8.5 million machines crashed by one untested config file
A single content update took down an estimated 8.5 million Windows machines in minutes.
P1 · Critical
Ariane 5: $370M lost in 39 seconds to reused code that was never retested
Trusted Ariane 4 code met a new flight profile and failed in less than a minute.
P1 · High
AWS S3 outage: how one mistyped command took down half the internet
One mistyped command parameter removed far more servers than intended.
P2 · Medium
GitLab data loss: six hours of production data deleted by hand, and five backups that didn't work
One destructive command exposed a recovery system that looked safe only on paper.
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