Bugs and their cost

Articles about Bugs and their cost from 99tests Blog.

What does one showstopper bug really cost? A 2026 breakdown

One bug cost Knight Capital more than $460 million in about 45 minutes. What a showstopper really costs, and how to catch one before your users do.

Nov 10, 2026 6 min read

21 software failures from Therac-25 to CrowdStrike: what went wrong, what each cost and the testing lesson. Every figure checked against its source.

Nov 9, 2026 15 min read