This could lead to security issues. .com is a file extension for DOS executables. Someone could have created a malicious .com file called "" that somehow ended up on your hard drive, and when you do:

/run, mIRC would execute the file, and the malicious executable would run.

It can also conflict with another .com filename that exists on your hard drive.


Let's say you want to visit , using you're way of doing:


would cause the '' program to run.