Critical 0-Click Microsoft Excel Security Bug Lets Copilot Steal Data

Excel users are warned to update now, as a critical vulnerability has been confirmed that can lead to “zero-click information ...

A 'Fascinating' Microsoft Excel security flaw teams up spreadsheets and Copilot Agent to steal data

There's more than one way to skin an Excel table, and this one abuses Copilot.

Microsoft’s March 2026 update fixes 80+ security vulnerabilities

This month's Patch Tuesday brings over 80 fixes for various security vulnerabilities. Fortunately, none are actively being ...

excel copilot security

Microsoft’s March Patch Tuesday fixes 78 vulnerabilities, including Office preview pane flaws, an Excel Copilot data leak risk, and an AI-discovered 9.8 severity bug.
How-To Geek on MSN

Stop fixing Excel formulas: 5 vital habits for data integrity

Prevent broken formulas using tables, validation rules, separate worksheets, named variables, and the power of LAMBDA.