Facilities built a commission calculator with a rounding bug

“It's anonymised-ish.”— Marketing Manager

Reason:

Mainly because the shared password was last changed 34 days ago. Started as Customers_final_v2.csv with a script attached.

Built by:

Miriam, a warehouse supervisor

Build time:

8 minutes

Built with:

a Slack bot doing database writes

Database:

the legacy system's database through a read-only user with write permissions

Authentication:

the security review was postponed until after launch

Deployment:

running on port 8081 in production

Responsible:

Miriam, who left 11 months ago

Documentation:

comments in the code, in a second language

Security situation:

password reset emails contain the old password

Future disaster:

It will process the same invoice 2 times.

Age: 1.8 years · originally expected to last 7 days · 2 owners so far · survived 1 reorganisation · last meaningful change 3 days ago · original builder left 339 days ago

Rated common mostly because: alive 95x longer than intended, 2 departments depend on it, the builder has left.