Unofficial ISOs frequently contain bundled malware, including:
The creator permanently deletes critical system components, drivers, fonts, and security architectures to shrink the size, resulting in an unstable, broken operating system. windows 7 64 bit iso highly compressed new
Modified "gaming" or "slim" ISOs often come with the Firewall and Windows Defender turned off by default to improve speed, leaving the system immediately vulnerable to network attacks. Unofficial ISOs frequently contain bundled malware