yes people can get access to where a person goes on the internet and get their personal information Thats why all computer classes say use fake names and never post such things as real time name, addresses and phone numbers. there is programs out there like spyware that if you enter a website where the owner of the website has it attached it can "follow the internet connections to your computer and gain access to you bank account and social security and so on. Every email and website you enter is stored on the hard drive even if you "delete" its still a part of the hard drive. just a couple weeks ago here in this city a guy took his comupter in for maitenance after deleating his porn stuff but when the technition was servicing his computer he found the porn traces and called the police and now that guy is sitting in jail for child porn and sexual abuse of minors. There are hackers that make it their job just to see how many computers they can gain access to and get peoples money and so on....

But there are great programs like Macafee -spyware protection, virus protection, fire wall and so on. as long as I make sure its activated and running before I enter any websites it stops any thing and anyone from getting in to my computer by virus, hacking or spyware. and I recieve notices of when other websites and people are trying to get access and it also tracks where that website or person trying to gain access is and asks if I want to forward the information on to the appropiate agencies for investigation.

People are going to be able to read posts on public message baords no matter what internet connection a person has but with macafee I know I am safe so I don't worry about it.

Also you might want to check to see if this fear could be related to you're mental health diagnosis? Some disorders have symptoms of paranoia and feelings that people are out to get them.