Security experts and antivirus vendors classify Chew WGA as a "HackTool" or "Malware". Malware Exposure:

Using tools like Chew-WGA might solve a nag screen in the short term, but the trade-off in security and stability is rarely worth it in the long run.

: Proponents claim it uses a "delicate" mechanism that avoids major changes to the boot sector or critical system files, allowing for a reversible uninstallation if needed. Risks and Safety Concerns

"The Risks and Consequences of Using Windows 7 Activators: A Cautionary Tale"