Varonis found a “Reprompt” attack that let a single link hijack Microsoft Copilot Personal sessions and exfiltrate data; Microsoft patched it in January 2026.

A new one-click attack flow discovered by Varonis Threat Labs researchers underscores this fact. ‘Reprompt,’ as they’ve ...

AI Copilot in Excel helps clean dates, split columns, and add currency formats, so you save time and make faster, clearer decisions.

Microsoft's spreadsheet program can do way more than you might imagine. These are the hacks and tricks you need to know. Our team tests, rates, and reviews more than 1,500 products each year to help ...

Microsoft Excel has been the premier spreadsheet software for decades, since outdoing the once venerable Lotus 1-2-3, the first killer app for PCs in the 1980s. And Excel's dominance has yet to be ...