How to crack the WEP code or password for Wi-Fi
Because of potential abuse, Computer Hope does not assist users in bypassing security measures. If this is your wireless router, and you forgot the WEP (Wired Equivalent Privacy) code, WPA (Wi-Fi Protected Access) code, or password, open your router setup and enter the wireless security section. In the wireless security section, the WEP or another security password can access your wireless network.
If you forgot the router setup password, reset your router and re-run the setup. This way, your login credentials and WEP can be reconfigured with a password you remember.
How to can I crack my neighbors Wi-Fi password
Computer Hope does not assist anyone with breaking any Wi-Fi security for any device, not only is it an invasion of privacy, it's against the law. If you want access to your neighbors router, ask them for their code.
If you have Comcast (XFINITY) and your neighbor is also using a Comcast wireless router, it's possible to connect to their router using your Comcast account.