If you're a security professional, using cracked software professionally is unethical and potentially actionable. Imagine:
Searching for a "Maltego License Key Crack" is not recommended, as downloading cracked software poses significant security risks and legal issues. Instead, you can access Maltego legally through several official channels. The Risks of Using Cracked Software
The irony of downloading a cracked security tool should not be lost: you're compromising your own security to investigate others'.