Excel File Security Explained: XLSX, XLSM, and Macro Risks
Last Updated: 28 Sept, 2026
Excel File Security Explained: XLSX, XLSM, and Macro Risks For decades, Microsoft Excel has stood as the universal engine of business operations. It balances corporate budgets, visualizes complex data sets, tracks inventory, and powers analytical pipelines across virtually every industry.
Yet, that same computational flexibility makes spreadsheets an enduring favorite among cyber adversaries. Attackers have weaponized spreadsheets since the early days of macro viruses in the late 1990s.