Most "cracks" and "keygen" files are used by hackers to distribute trojans, ransomware, or keyloggers. Since you often have to disable your antivirus to install them, your data is left wide open [1, 2].
Anatomy is a science that evolves, and the software needs regular updates to maintain accuracy and feature quality. A cracked version is stagnant, denying you crucial updates to the anatomical models. C. Legal and Ethical Issues