Tips for Using Public Wi-Fi Networks
How Encryption Works
Encryption is the key to keeping your personal information secure online. Encryption scrambles the information you send over the internet into a code so that it’s not accessible to others. When using wireless networks, it’s best to send personal information only if it’s encrypted – either by an encrypted website or a secure Wi-Fi network. An encrypted website protects only the information you send to and from that site. A secure wireless network encrypts all the information you send using that network.
How to Tell If a Website is Encrypted
If you send email, share digital photos and videos, use social networks, or bank online, you’re sending personal information over the internet. The information you share is stored on a server – a powerful computer that collects and delivers content. Many websites, such as banking sites, use encryption to protect your information as it travels from your computer to their server. To determine if a website is encrypted, look for https at the beginning of the web address (the “s” is for secure). Some websites use encryption only on the sign-in page, but if any part of your session isn’t encrypted, your entire account could be vulnerable. Look for https on every page you visit, not just when you sign in.
Protect Yourself When Using Public Wi-Fi
So what can you do to protect your information? Here are a few tips:
- When using a Wi-Fi hotspot, only log in or send personal information to websites that you know are fully encrypted. To be secure, your entire visit to each site should be encrypted – from the time you log in to the site until you log out. If you think you’re logged in to an encrypted site but find yourself on an unencrypted page, log out right away.
- Don’t stay permanently signed in to accounts. When you’ve finished using an account, log out.
- Do not use the same password on different websites. It could give someone who gains access to one of your accounts access to many of your accounts.
- Many web browsers alert users who try to visit fraudulent websites or download malicious programs. Pay attention to these warnings, and keep your browser and security software up-to-date.
- If you regularly access online accounts through Wi-Fi hotspots, use a virtual private network (VPN). VPNs encrypt traffic between your computer and the internet, even on unsecured networks. You can obtain a personal VPN account from a VPN service provider. In addition, some organizations create VPNs to provide secure, remote access for their employees.
- Some Wi-Fi networks use encryption: WEP and WPA are the most common. WPA2 is the strongest. WPA encryption protects your information against common hacking programs. WEP may not. If you aren’t certain that you are on a WPA network, use the same precautions as on an unsecured network.
- Installing browser add-ons or plug-ins can help, too. For example, Force-TLS and HTTPS-Everywhere are free Firefox add-ons that force the browser to use encryption on popular websites that usually aren't encrypted. They don’t protect you on all websites – look for https in the URL to know a site is secure.
produced by: onguardonline.gov
For more information, please visit: www.onguardonline.gov
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