Digital Vulnerability: How safe are you on social media?

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All this week, we've been showing you ways in which you are technically vulnerable.

This is a look at truths on social media that could get you into trouble with a perfect stranger.

Your own information, posted by you, then used against you.

Facebook has over a billion daily active users and there are more than 300 million users a month on Twitter.

While millions, even billions, are connecting on social media worldwide, what are the pictures, the captions, the details of your page really telling about you. Could it land you in trouble or even put you in danger?

WGN News asked those very questions of 23-year-old Kylee Fuchs.

"I feel like I don't have anything to hide,” she said.   “And if someone really wants to crack my password on my FB or something like that, I probably wouldn't care."

Young, social, and maybe a little naive when it comes to her on line social life, WGN asked Kylee to share just a few small details about her to see what our “white hat hacker” Jerry Irvine might learn.

He was given just her first name, spelled wrong for Jerry, by the way, the city she lives in, her profession and the name of her pet.  That's it.

In less than 45 minutes, this friendly, non-threatening hired hacker told Kylee more than she wanted to know - or at least, more than she thought he could.

With a few details about a stranger's life, but with the help of all that social media has to offer, in Kylee's case, Facebook, Twitter, Pinterest, and LinkedIn, Irvine found her online and a whole lot more.

" I found out where you live, what you like, including your interests on Pinterest,” he told a shocked Kylee.  "Your birthdate. I actually found out from your birth certificate which I was actually able to get online because it's all public record."

With that information Irvine said he could get an ID.

“I could go in and get a state ID, driver's license … We could go in and get documents. We could create documents for you and steal your identity."

All of it is information people regularly use when answering security questions they set up for other secure online sites.  Like with their banks. Kylee's answers and millions of others, likely right on their very own social media posts.

Irvine says lie about it or use someone else's information.

So what can you do to protect the true you on line?

When it comes to passwords, change them up and often, every 30-45 days. No more.

To organize and remember all your passwords, Irvine recommends electronic wallets. These management tools are encrypted and are a step up from using the same password over and over again.

So what can you do to better protect your social media posts?

Change your social media settings. Don't allow anyone who is not a friend to see your information. Also, turn off location settings when you travel.