some one call me , and said he is from microsoft , and my pc. is having a problem, and I have. he aske me to have access to my computer so he can fix it.
when he access my computer, he explain that some problems are in my  P.C. and he can put software, will fix the problems. with named price.
and ask me not to use the computer for the next 40 minutes. so disconected him from the net. and told him I will call him if I need his help.
cleaned my pc. from cookies, history, browsing and resart my pc.