I am an oversea reader, and want to open an account to put money into the account.  I know I can use credit card, but recently everytime when I log into jjwxc, an advertisement of an on-line game pop out, I am not sure if jjwxc net has virus so that my PC is infected, or it is normal to have advertisement come out.  I want to make sure that there is no virus before I pay on web by credit card, otherwise it is easy for hacker to get my card information, so any security to protect oversea reader like me?