Cracked software is a primary delivery method for malware. To bypass Microsoft’s licensing checks, "crackers" modify the original program files. During this process, it is incredibly easy to inject: Locking your files until you pay a fee.

If you're looking to use Microsoft Excel, I encourage you to explore the official channels mentioned. Not only do these options ensure you're accessing the software legally, but they also come with the benefit of support, updates, and peace of mind regarding security.