Websites hosting "working" serial keys are notorious for malware. Clicking fake generation links can silently install trojans, ransomware, or adware on your machine.
IObit, like most modern software developers, utilizes online activation servers to validate software licenses. When a legitimate premium key is leaked online and shared with thousands of users, it triggers a system flag. IObit quickly blacklists the compromised key. If you attempt to enter a blacklisted code, the software will return an "invalid key," "expired," or "maximum activation limit reached" error.
Cybersecurity firms (McAfee, Kaspersky, Norton) consistently report that "driver updater cracks" are a top vector for malware. Hackers embed keyloggers, ransomware, or crypto miners into fake key generators.