Connecting to the Internet in a public space like a coffee shop, the library or an airport is a wonderful modern convenience, but it comes with significant risk.

On a free public network, using Wi-Fi means you’re potentially sharing your credit card numbers, passwords and other personal information with the world, leaving yourself vulnerable to criminals.

AARP Fraud Watch Network reports fraudsters have come up with a number of ways to steal information from you or attack your computer while you are on public Wi-Fi. New hacking tools available free online make it easy even for novice hackers to compromise your security.

AARP Fraud Watch Network recommends four things to never do on public Wi-Fi:

1. Don’t access your email, online bank or credit card accounts using public Wi-Fi.

2. Watch out for fake Wi-Fi at coffee shops, hotels or other places offering free Wi-Fi. Con artists set up networks with similar names to trick unsuspecting customers.

3. Don’t let your mobile device automatically connect to nearby Wi-Fi.

4. Don’t surf using an unknown public network if the website requires sensitive information - like online shopping.

The AARP Fraud Watch Network was launched in 2014 as a free resource for people of all ages. Users may sign up for “Watchdog Alert” emails that include tips and resources to help spot and avoid identity theft and fraud and provide access to a network of experts, law enforcement and others who will keep you up-to-date on the latest scams in your area.