RemoveWAT stands for "Remove Windows Activation Technologies." Unlike traditional "KMS" activators that attempt to trick Windows into thinking it has a valid license key, RemoveWAT takes a more aggressive approach.

Many versions of Removewat found online are camouflaged malware designed to steal data or compromise the host machine.

It typically removes "Windows is not genuine" watermarks and activation nag screens. Critical Risks and Security Concerns