Turn Postmortems Into Controls
Convert a data incident postmortem finding into an owned preventive control.
Postmortem gap ARR was overstated by 6 percent because duplicate subscription rows passed through the finance mart. The review captured what happened, but recurrence in a neighboring source shows the lesson did not become a control. Learning loop Postmortem -> Control -> Verification Blameless review creates honesty. Controls create future reliability. Weak close Ask everyone to be more careful with joins. The next similar failure is caught by the system, not memory. The postmortem action item should change the environment so the same mistake is harder to repeat. 01 Finding 02 Control 03 Verify Write the finding Specific
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