At around 12:00 AM EST (05:00 UTC) on Saturday, we detected an upsurge in UDP traffic from source port 4000. This traffic is caused by a new worm ("Witty") which exploits a vulnerability in BlackIce's ICQ parser. Later today, variations of the worm apparently used source ports other then port 4000. However, it is not clear if this is a new variant or a side effect caused by NAT.
Given that this worm generates large amounts of traffic, and the wide spread use of BlackIce, we will keep the InfoCon level at 'YELLOW', likely until Monday morning.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?