Read the host before the rest of the URL
In https://example.com/help?from=app, the host is example.com. The path and query come after it. A brand word in the path or query does not tell you who owns the host.
Compare the whole address
Check spelling, hyphens and the last part of the name. For example, example.com and example.com.example.org are different hosts. Check the final address after a redirect.
Use the browser’s security information
HTTPS protects the connection to the displayed host. The Chrome site information panel describes the connection and shows browser warnings. Independently confirm the host before entering account information.