Computer Virus/bug that blocks you?

[FireCanine]

Is there some kind of computer virus/bug something that block your computer from being seen on the internet without you knwing? For example if I post a publication on my facebook wall/youtube/twitter, the virus blocks other people from being able to see it? even though the settings are public?

[LOL]

No impossible. But what is possible are hacker that block people for you. Wanting to restrict their knowing of thing.

[Ps2jak2]

Check your facebook etc privacy settings first of all to make sure you are in fact posting them properly. The next thing to do would be to update your anti virus and run it or if you don't have one download something like avira http://free.avg.com/us-en/download-avg-anti-virus-free and install and update it then scan your computer. If they find something and can't remove it try using malware bytes anti malware to remove it as that is known for removing stuff other things can't