"Preactivated" files often use KMS hacks or illegal activation servers that can inject malicious code into your system. These can include worms, keyloggers, and ransomware that remain hidden in the background .
If you specifically need Office 2010 (perhaps for an older computer running Windows 7 or for compatibility with specific legacy files), the safest method is to use the official installer. ms office 2010 preactivated google drive better