Everyone knows not to post certain things online: credit card numbers, embarrassing pictures and highly personal information.

But there are some not-so-obvious things that could put you and your family at risk.

Kurt "The Cyber Guy" Knutsson dropped by "Fox and Friends" to share some helpful tips on what not to share online.

Knutsson said the number one thing to avoid posting is your home address.

"Don't give it out," Knutsson advised. "Don't say, 'Oh my gosh, my flowers look so beautiful right here at my address,' with the number or geotag on it as well."

Slightly less obvious, he said, don't post pictures of concert tickets, which have unique bar codes that thieves can steal online and print out.

Additionally, posting about your favorite sports teams or mascots can be dangerous. That part of your personal history can be used by hackers to narrow down your identity, Knutsson explained. Plus, many people use that information as answers to security questions.

Knutsson also revealed that new video games or software have codes on or in the packaging that could be used to gain access to the product, so avoid sharing photos of those.

"You buy the software, you're the good guy. You go home, you paid for it. And suddenly, it's not working," Knutsson explained.

Finally, boasting about your vacations and time away from home will make you a bigger target for bad guys.

"The bigger you brag, the bigger the trouble," Knutsson warned.

Watch more from "Fox and Friends" above.

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