Basic Web mission 10 is, just like the previous nine missions, easy if you know the technique. I will assume that you use the Firefox extension Add N Edit Cookies, which is a very useful tool for viewing and editing cookies.
Here, we are even given exactly how Sam’s script works. Enter some random password, and you will see that you are not authorized. Now, open the cookie editor and check what cookies you’ve got from hackthissite.org.