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Most connections are via a router and provide you with access to any other devices connected to your network as well as to the Internet. If you are using public access from a connection that you don't control (something other than your home network) or one that isn't secured properly (you haven't changed the default passwords or enabled security) then you are placing your computer and data at risk.
Everyone on an insecure (public) network such as a coffee shop can potentially “see” the information you are sending and received on that Wi-Fi service.
If you are having difficulty with your Internet access, the most likely causes are one or more of the following: If the issue is with your ISP or with access to Internet in your area, you'll just have to wait for the problem to be resolved.
Progress through this page to process these alternative solutions.
A network is a collection of computers and devices that are connected together, allowing them to share information. Most people connect to the Internet either via their home or work network (router) or via a free wireless service provide by a coffee shop or community broadband service or via their cellular provider.
If you have no Internet access a series of troubleshooting steps will help to determine where the breakdown is and how to resolve the problem.
If restarting your computer or device doesn't work, you'll have to verify each potential problem to verify that it is or isn't the problem until you restore access.The following are specific to each operating system.