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How Spreadsheets Create Security Risks After Delivery

How Spreadsheets Create Security Risks After Delivery

June 12, 2026 / in Blog / by Zafar Khan, RPost CEO

Human Mis-Sends, Compromised Accounts, and AI uploads Are Turning Native XLS Files into Real Data Risks.

Rocky the Raptor here, RPost’s cybersecurity product evangelist. I’ve been thinking; there are a few file formats in business that have become so familiar that executives rarely pause to question them. The spreadsheet is one of them.

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