I mostly agree with others saying don't care too much. If someone use cracked version of your software, it's unlikely that you can persuade them to purchase at

I mostly agree with others saying don't care too much. If someone use cracked version of your software, it's unlikely that you can persuade them to purchase at least at the current pricing available to them. And in some situations, being pirated do help one earn popularity and even have vendor lock-in effect. There must be a reason that COMSOL comes with up to date FlexNet licensing 11.16 but only uses it's non ECC short SIGN with well documented method of cracking. Technically, it's very hard to stop a determined cracker once they get your binary. VMProtect, Themida or other strong packers maybe to some extent can, but those do degrade user experience, so not really popular for professional software. Dongle based solutions by Gemalto or Wibu? They are expensive. One need to physically post the dongles. And they are still crackable unless one have been really carefully implementing the protection scheme (never seen one yet). See how the cracker's tools (well, reverse engineering tools) are protecting themselves: IDA and JEB Pro are two prominent examples, they don't get pirated until someone leaked the installer. They watermark their distributions, and then they can trace who leaked the binary and act accordingly.