entry points security

Friend asked me if I had to give my computer to install entry points for security, listen to a friend and I said I listen to my colleague before, but I didn’t give me the computer installation, friends listen to what I speak to let my computer installed a entry points security try saying is very good, and also very good to protect our computer files inside, listen to a friend and I said I go home at night is to install a try, friends listen to what I said her many colleagues and friends are in use, listened to the friend about what I said as long as the use of computers has good protection I will have been use?