TechSmith actively monitors GitHub. Under the Digital Millennium Copyright Act (DMCA), they file takedown requests. While they rarely sue individual users for using a key, they subpoena GitHub for the identities of users hosting the keys. If you are the repository owner, you risk a lawsuit.
If you are looking for Snagit 2021 specifically or the latest version, the following official methods are recommended: snagit key github 2021
If the price is the main issue, consider high-quality free tools like ShareX (Windows) or the built-in Snipping Tool , which provide many of the same basic features without the security risks. Final Verdict TechSmith actively monitors GitHub