is an anti-malware tool developed by Reason Cybersecurity (formerly ByteFence, LLC). However, it has a controversial reputation. Many security experts and users classify ByteFence as a potentially unwanted program (PUP) because it is often bundled with free software, uses aggressive pop-up alerts to push paid upgrades, and can be difficult to fully uninstall. Some antivirus programs even detect it as a riskware tool.

I understand you're looking for information about "ByteFence license key," but I need to provide an important caution first.