HR built a commission calculator with a rounding bug

“The API isn't documented.”— IT Service Desk

Reason:

Because the temporary solution has survived 7 managers. With 122 users and zero documentation.

Built by:

Petra, a working student

Build time:

6 evenings

Built with:

React, Vite and enthusiasm

Database:

passwords stored in a column called password

Authentication:

the temporary firewall rule has existed for 18 months

Deployment:

running in a region 5 time zones away from its users

Responsible:

Plant Manager, who calls it "the little tool"

Documentation:

a Loom video nobody can find

Security situation:

the security exception expires every year and is renewed every year

Future disaster:

It will accidentally CC 313 people.

Age: 292 days · originally expected to last 3 weeks · 1 owner so far · survived 1 reorganisation · last meaningful change 292 days ago

Rated common mostly because: 333 users, 50% chance of becoming business critical, alive 14x longer than intended.