All doesn't do what you might think.
It doesn't ping anyone on this thread and and certainly not every user on the system.
That would bring the server to its knees I suppose!
Putting this in the breaking category is closest thing to do what you are thinking,
However I just looked at Symanec and they don't seem to have anything on this, nothing that can be downloaded that I saw!
As always anyone on a broadband connection needs to have good and up to date Firewall protection!
Others I pinged may help us all on whether we can do anything!