Because these tools are distributed through unverified repositories, they are frequently modified to include keyloggers or remote access trojans (RATs).
If you are trying to activate Windows legitimately, Microsoft provides official Generic Volume License Keys (GVLK) for KMS clients on Microsoft Learn . However, these only work if you already have a legal KMS host set up in your organization. For personal use, it is safest to stick to official retail or OEM product keys to avoid the risks associated with random "Ultimate.zip" files from the web. KMS client activation and product keys - Microsoft Learn Download Mini KMS Activator Ultimate zip
Most activators require you to disable your antivirus because they are "detected as viruses". While some detections are indeed false, this leaves your system wide open for actual malware to sneak in undetected. For personal use, it is safest to stick
The "Ultimate.zip" you find on third-party sites is rarely what it seems. Security experts and platforms like Neowin warn that these unofficial hacks are often bundled with: The "Ultimate