Many shared keys are Generic Volume License Keys (GVLK) or have been blacklisted by Minitab’s activation servers, meaning they will not work during the mandatory online or manual activation process.
The Truth About Free Minitab 16 Product Keys: Risks and Better Alternatives free minitab 16 product key
Sites promising "cracks" or "keygens" frequently bundle software with Trojans or ransomware that can compromise your personal data. Many shared keys are Generic Volume License Keys