Don't trade in public, only on your own computer. It's best to set up drive C of your computer, reinstall a clean system, and then install a firewall. Do not go to some unhealthy websites. Generally, it's no problem. When you use the bank's online banking, the bank still has certain protection measures, such as ICBC's U shield, electronic key and CCB's U disk. If it's as unsafe as you say, then don't do online shopping, bank electronic transfer and so on.