port 5280

Did not know what happened all of a sudden I saw for two minutes IP number never seeing hacker programs and New Port
I saw in the program netstat x and firewall Comodo did not stop him see What is port 5280

Wall did not alert Is this serious
What is this and what appeared Is Port Hacker

Are you using Stealth Settings? In that case CIS will block and not log. You will need to change the basic block rule at the bottom to block and log to see what is knocking at your door.