A new worm, called Zotob, has hit the internet recently by exploiting a vulnerability affecting Windows users. The worm scans random machines for activity on port 445. If a venerable machine is found, the worm is then downloaded from the scanners machine and copied to the newly-found machine. The worm then sets up an FTP server on that computer and searches for other venerable computers.

Microsoft has recently released an update this month to patch this worm, so all users are highly recommended to upgrade immediately if they haven’t already.