It's a jungle out there in Cyberspace. Everyone is after your information to steal everything you own, including your personal identity (who you are). The only sure way to prevent this is to stay off the internet and get rid of your cell phone. So how inconvenient is that in todays world? Very. So what can be done to mitigate the potential, and probable, attacks?
Do a basic [Google] search for your name on the internet. You may be surprised of the results. Sometimes contacting the web site where the information is posted can help start reducing your exposure on the internet. Giving out personal information for, what seems to be, an innocent purpose (social network sites, for example) could lead to invasion of privacy and identity theft.
Identity Theft Insurance