Challenges do NOT require any bruteforcing/directory fuzzing/massive amounts of traffic unless clearly specified in the challenge information below.
Did you know that a browser extension to capture websites can be written with little to no knowledge? I've done it and it works great!
By the way, maybe you could help me with a serious problem. Some websites can tell what emails I have in my Gmail account! Is that a browser bug?
Note on trying out the browser extension: Unpack the linked ZIP file to a directory. To load this directory as an extension:
In Chrome: Go to chrome://extensions/, enable Developer mode, click "Load unpacked" and select the directory.
In Firefox: Go to about:debugging, click "Load Temporary Add-on" and select any file in the directory.