The legality of using KMS activators is a gray area. While KMS itself is a legitimate technology provided by Microsoft, many KMS activators available online are not authorized by Microsoft and can be considered illegal. Using such tools can expose users to significant risks, including malware and data theft, as these activators often come from untrusted sources. Moreover, using an unauthorized activator can lead to software being deactivated by Microsoft, resulting in potential loss of access to essential applications. It’s advisable to always use legitimate methods for software activation to ensure compliance with licensing agreements and maintain system security.