It's really unclear. There's a good chance we will never know where it came from.

The race is definitely going to be won by the exploit writers, because they're going to be able to publish an exploit in the next couple of days, ... It's such a glaring bug, I don't know how anybody else didn't discover it.

It's basically almost any Windows PC right now that you can compromise if you can trick a person to going to the wrong Web site or opening the wrong e-mail.

It just allows for a lot of ways that you can manipulate systems or services to basically use UPnP to either hide attacks or use UPnP as a jump point for other attacks.

The flaw can be exploited if the user opens a wrong file or goes to a wrong Web site. Then the attacker can execute code as the user, who is viewing the file or Web site.

Not every hacker is a cracker.

That one is really easy to exploit.

This is the type of vulnerability that's been exploited many times, and those two worms are the biggest examples because they had the biggest impact.

We are definitely going to see dangerous exploits for it because it's not really technically challenging to write the exploit code.