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May 3, 2026 · 1 min read

What is feature leakage and why is it one of the most dangerous mistakes in production ML?

Feature leakage (data leakage) is when information from the future or from the target variable is included in the training features causing artificially high training metrics that completely fail to…

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📅 May 03, 2026 ⏱ 1 min read

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What is feature leakage and why is it one of the most dangerous mistakes in production ML?

COVER // WHAT IS FEATURE LEAKAGE AND WHY IS IT ONE OF THE MOST DANGEROUS MISTAKES IN PRODUCTION ML?

Feature leakage (data leakage) is when information from the future or from the target variable is included in the training features causing artificially high training metrics that completely fail to generalize to production.

data-leakage feature-leakage intermediate ml production

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