Immediately after installing the system, install the system security monitoring software. After installing the software, monitor the whole system. A warning will pop up when any software is running. According to the information it provides, you can choose whether the program can run at will, only this time, or prohibit it from running. General rogue software has absolutely no place to hide under its monitoring. More importantly, this software is still free at present. However, it will be a bit cumbersome to use, and there will always be a pop-up window asking if you are running, but just get used to it. I can stop using anti-virus software now. Install a system security monitor and a firewall, and the system will basically have no major security problems.