How do hackers invade other people's computers?

The last ransomware, many people are recruited because the computer opens port 443 by default. Hackers can scan which ports the target host has opened, and then they can invade your host through these ports.

2. By inducing users to download the pre-written Trojan virus.

Different Trojan horses have different intrusion methods, but hackers can use human weaknesses to lure you to download some "petty profits" and then control your host through Trojan horse programs.

3. Intrusion through websites

If the hacker's target host is a network server, ta can find an upload vulnerability and upload it to Trojan horse. If there is no upload vulnerability, then find SQL injection, enter the background, upload Trojan horse, extract and control the target server.