A Google search for "Microsoft product key checker" yields dozens of third-party tools like ProduKey, LicenseCrawler, Magical Jelly Bean Keyfinder, and various online "key validator" websites.
A is an invaluable tool for maintaining the health of your software ecosystem. Whether you are troubleshooting an activation error or auditing a fleet of workstations, knowing the type and status of your keys prevents downtime and legal headaches.
. If you input your key into a malicious website, the owner can steal and sell your license. Best Practice
While there is no single famous academic paper with that exact title, the definitive resource on this topic is the technical analysis of the .