Most sites offering free keys bundle their "cracks" with trojans, ransomware, or spyware. These can compromise your DAW (Digital Audio Workstation) stability or, worse, steal your personal data.
You don't need a "free license key" to save money. FabFilter is known for being generous with legitimate discounts: Fabfilter Pro L 2 License Key Free-
FabFilter typically runs a 25% off sale during the Summer and Black Friday. Conclusion Most sites offering free keys bundle their "cracks"