Build 38600 is years old. Acronis has released multiple patch cycles for 2020 (build 39216 was the final), but repacks cannot receive official updates. You miss bug fixes and, crucially, security patches for the software itself.
A new backup format increased speeds by up to 50% compared to previous versions. Custom Controls: acronis true image 2020 build 38600 preactivat repack
The most immediate danger lies in the modification process. "Repacks" are created by anonymous actors. When a user runs a pre-activated installer, they are executing code that has been altered by an unverified third party. It is trivial for a distributor to embed a Trojan, keylogger, or botnet agent within the installer. Because the user has disabled antivirus protection to install the crack, these malware payloads often go undetected. This is particularly ironic when pirating Acronis, a security tool; a compromised version of backup software could steal the very data it is meant to protect. Build 38600 is years old