The tool attempts to log into Spotify with these credentials.
"By Server" implies that different servers may return slightly different JSON structures, so tailored keyword lists ensure accuracy. Security Implications HQ Spotifykeywords by Server.txt
If the login is successful, the tool fetches the account details (HTML or JSON response). It then searches this data for the keywords in the HQ Spotifykeywords by Server.txt file. The tool attempts to log into Spotify with these credentials