Technical deep dives into CSV edge cases, Excel quirks, and data security.
Jan 11, 2026
Why 00123 becomes 123 and how to stop it using Power Query or automation.
Jan 11, 2026
Prevent credit card numbers and long IDs from becoming 1.23E+15 and losing precision.
Jan 11, 2026
The definitive guide to importing data without corruption. Stop double-clicking files.
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Is 03/04 March 4th or April 3rd? How to handle locale-dependent dates safely.
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How attackers use CSV files to execute commands on your PC, and how to neutralize them.
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Using deterministic hashing to prove that your Excel file matches the source CSV.
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Why emojis and accents break in Excel and how to handle UTF-8 encoding correctly.
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Why this popular feature is destructive and how it corrupts global Excel settings.
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Why applying "00000" formatting doesn't actually fix your ZIP codes.
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Batch convert folders of CSVs safely using the SterileCSV command line tool.
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If only one person knows how to import CSVs correctly, your workflow is broken.
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