This is the biggest danger. Because these portable versions are not official releases, they are frequently bundled with malware, spyware, or trojans. When you run an unauthorized executable file, you are trusting an unknown hacker with your computer’s security.
Furthermore, Excel 2013 is lighter on system resources than Office 2019 or 2021, making it ideal for portable usage on older hardware or low-RAM netbooks. excel+2013+portable
A robust, free suite that includes Calc , a powerful spreadsheet program. It features native support for opening and saving Excel-compatible files. This is the biggest danger
If you are looking for legal, portable alternatives for on-the-go productivity, please Excel Online (requires internet, but fully licensed). Google Sheets (web-based, great for portability). they are frequently bundled with malware