The primary danger of downloading an OS via torrent is the . When you use an unofficial ISO, you are essentially trusting a stranger with the "keys" to your entire digital life. Custom builds can easily include:
The inclusion of compression allows these ISOs to be smaller and fit on standard USB drives, while the OEM designation usually means the installer is configured to automatically detect and apply BIOS-based licenses for major brands like Dell, HP, or Lenovo. This "ready-to-go" convenience is the primary driver for the continued popularity of such torrents. The Dark Side: Security and Trust
Unofficial patches can cause unexpected "Blue Screen of Death" (BSOD) errors on specific hardware. Conclusion
Keyloggers or rootkits embedded at the kernel level.