I set up a wireless network and now it is showing up with multiple listings?

When I search for a network, the network I set up is listed several times. It will be listed as network, network2, network3. I only set up the network once. Is this a problem? Is it some sort of security risk? The network is hidden and security enabled. I am not that computer savvy and was concerned that these variations on my network have appeared. Any information would be appreciated. Thanks.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).