The MAS toolkit includes several activation methods:

The file cw.exe is associated with "Chew-WGA," an old, unauthorized hacking tool designed to bypass the Windows Genuine Advantage (WGA) activation mechanism in Windows 7.

If your computer is too old for Windows 10 or 11, consider switching to a lightweight Linux distribution such as , Linux Mint , or Zorin OS Lite . Linux is completely free, receives regular security updates, and runs well on older hardware. For users who only need basic functionality (web browsing, email, document editing, and media playback), Linux can replace Windows 7 without any activation headaches or security risks.

Many free activation tools come bundled with adware or browser hijackers. Even if the user only intends to run the activator, the installer may silently install additional software that displays intrusive advertisements, changes browser settings, or tracks user activity. Antivirus and anti-malware products commonly flag KMS activators and similar tools as Potentially Unwanted Programs (PUPs).