My family bought me a new Mac laptop. I down loaded Firefox and was told that there was a privet setting. Reading the info. on the setting-it tells me that my employer can still track my info and history. Why? It's not a work related computer. It is my own personal and is not on their line or used for work. So that tells me that if I throw out my computer or it is stolen then people can still pull up my past web, or google searches or sights. How do I keep them out? do a complete 7 scan erase each time? A lot of younger kids are able to dig deep into most computers. I want it to be like a Library. Open the door walk in read, listen to music, videos, when I am done walk out shut the door and no one needs to know what I did in the library. PRIVET is not very PRIVET on computers.