(NBC NEWS) -- In the early days of social media, there was no hesitation with what we shared with who we thought were only family and friends.
Now we know others were and are watching.
"One in five people, one in five! have had either their social media account or their email hijacked by a bad guy," points out privacy expert and author Bob Sullivan. "That means someone was able to impersonate them on Facebook or on Twitter or send an email that looked like it was from them"
Privacy experts like Sullivan call what we've left behind on the internet "digital breadcrumbs"
A new survey from the Pew Research Center shows many are now trying to clean up those crumbs.
"86 percent say that they've tried to at least do something to clean up those digital bread crumbs," Sullivan says.
Pew's research also shows people have lowered expectations of privacy while online, and also lowered the personal info they're posting.
"People are taking steps to protect their privacy, but they don't know quite what they are doing and most of them feel pretty bad about all the information that's out there and don't really believe that they can protect themselves right now," notes Sullivan.
One discouraging note from the survey for online retailers: People want to hide personal info from not only hackers, but advertisers as well.