| Aspect | Official Microsoft Evaluation | Pirated/Cracked ISO | | :--- | :--- | :--- | | | Free for 180 days | Free (illegally) | | Legality | Legal (for testing) | Copyright violation | | Security | 100% clean, signed files | High risk of malware, rootkits, or backdoors | | Activation | Requires legitimate license after 180 days | Cracked activation tools (often contain viruses) | | Updates | Full Windows Update support | Usually disabled or broken |