One of the biggest weaknesses on the internet is you, the user.
You can have all the security in the world (anti-virus, firewalls, etc), but if you click on the wrong link, or if you execute the wrong command, it still goes wrong. A weak password is one of the things that can get you in to trouble if you are not careful, and this challenge is aimed at cracking simple passwords.
Having a strong password is key in the world called internet, and most people would recommend at a password with the following:
At least 8 Characters in length.
At least one Captital.
At least one number.
At least one non-numerical/alfa-numerical character (like !@#$*)
It also most not be a word that is in the dictionary.
The Puzzle
To get to the final coordinates you will need to find one of most used passwords and enter it at.
http://geocaching.freburg.org/hackme3.php
The website and the commands that you need execute are harmless and will not damage any computer or server in any way.
Hints to solve the puzzle are included on the website.
Please note: it has not been checked by Groundspeak or by the reviewer for possible malicious content and access to the relevant sites is at your own risk.