Note that many websites have their own advertising, unrelated to adware.
From the author's description,
UnSecure is a Brute Forcing program to exploit flaws with the worlds current Internet Security. This program is able to try every possible password combination, and pinpoint the users password. UnSecure can currently break into most Windows 95/98, Windows NT, Mac, Unix and other OS servers with or without a firewall. Some people say the time to Brute Force a server can take years. This is not true considering the way hardware is being sped up.