With the increased threats of viruses, malware, and hackers, it is essential to secure your home network. While there is no single 100% solution to secure your home network, there are several actions that an individual can take to help make it more secure. Things such as setting/changing the default router password, hiding broadcast networks, and setting encryption level can help increase your home's network. The following website contains a fairly comprehensive list of actions that you can take. If you are unsure of how to do something, please consult our router's manufacturer's website.
You can also download the attached PDF file from SANS Institute which discusses home security.