Let's get a few things straight: The first sentence's implication ("steal windows") does not necessarily follow from the second sentence. Not everyone who uses a tool which is sometimes used by crackers is a cracker. Some might even be security people themselves. The fact is, Windows' activation system is fairly braindead. Among the things it doesn't handle well are major hardware upgrades, and transferring of licenses from one system to another - the latter of which is a right of the end user as a corollary to the "doctrine of first sale", and has been upheld repeatedly by the courts in explicit repudiation of licensing clauses which may try to prohibit it. As long as Microsoft refuses to fix activation to reasonably handle these cases, said end users are basically forced to use tools like AntiWPA in order to make legitimate use of their legal rights. AntiWPA does not prevent updates. I've got a computer which has been running AntiWPA 3.3 for a couple of years now, in order to make use of the Windows XP Professional license from an earlier laptop which had died (the license key/COA is sitting on the desk in front of me, still attached to the plastic memory cover from the old laptop). It has never had any trouble obtaining updates, and receives the same set of updates as other computers I have which do not run AntiWPA and were activated the normal way. A user carefully installing AntiWPA for the purpose of making legitimate use of their legal rights is no more likely to infect their system with other malware than a user who has activated the usual way. In fact, they are probably less likely to have malware, as they have shown enough of a modicum of computer savvy to search out and vet AntiWPA and decide it is the appropriate tool for their needs. They might in fact even have read the publicly-available source code, tested it in a sandbox, and continued to monitor its activity after installation to make sure it isn't doing anything wayward. The simple fact is, labeling AntiWPA as "Trojan.I.Stole.Windows" is both technically incorrect and legally questionable (and, be aware, there are jurisdictions where knowingly making a false accusation of criminality is itself a criminal act), not to mention inappropriately snarky.