Wireless Security (continued)

4. Change the identifier on your router from the default. The identifier for your router is likely to be a standard, default ID assigned by the manufacturer to all hardware of that model. Even if your router is not broadcasting its identifier to the world, hackers know the default IDs and can use them to try to access your network. Change your identifier to something only you know, and remember to configure the same unique ID into your wireless router and your computer so they can communicate. Use a password that’s at least 10 characters long: The longer your password, the harder it is for hackers to break.

5. Change your router’s pre-set password for administration. The manufacturer of your wireless router probably assigned it a standard default password that allows you to set up and operate the router. Hackers know these default passwords, so change it to something only you know. The longer the password, the tougher it is to crack.

6. Allow only specific computers to access your wireless network. Every computer that is able to communicate with a network is assigned its own unique Media Access Control (MAC) address. Wireless routers usually have a mechanism to allow only devices with particular MAC addresses access to the network. Some hackers have mimicked MAC addresses, so don’t rely on this step alone.

7. Turn off your wireless network when you know you won’t use it. Hackers cannot access a wireless router when it is shut down. If you turn the router off when you’re not using it, you limit the amount of time that it is susceptible to a hack.

8. Don’t assume that public “hot spots” are secure. Many cafés, hotels, airports, and other public establishments offer wireless networks for their customers’ use. These “hot spots” are convenient, but they may not be secure. Ask the proprietor what security measures are in place.

Be careful about the information you access or send from a public wireless network. To be on the safe side, you may want to assume that other people can access any information you see or send over a public wireless network. Unless you can verify that a hot spot has effective security measures in place, it may be best to avoid sending or receiving sensitive information over that network. Test your knowledge of these and other tips at www.OnGuardOnline.gov/quiz.

Glossary

Encryption: The scrambling of data into a secret code that can be read only by software set to decode the information.

Extended Service Set Identifier (ESSID): The name a manufacturer assigns to a router. It may be a standard, default name assigned by the manufacturer to all hardware of that model. Users can improve security by changing to a unique name. Similar to a Service Set Identifier (SSID).

Firewall: Hardware or software designed to keep hackers from using your computer to send personal information without your permission. Firewalls watch for outside attempts to access your system and block communications to and from sources you don’t permit.