This is the biggest threat. Cheat tools are a common vector for malware.
Executing these files can silently install spyware that steals passwords, or ransomware that encrypts your entire hard drive. Chew-wga 0.9 Win7 Activator
If you absolutely must use Windows 7 for an offline legacy application, ensure you use a legitimate, legally acquired product key to activate the software properly through Microsoft's legacy phone activation system. Conclusion This is the biggest threat
To understand why this tool is highly controversial, it helps to understand its technical approach to bypassing Windows Genuine Advantage: ensure you use a legitimate