On today's Internet Storm Center Diary :
Johannes noticed an odd attack coming from what turned out to be a DVR in China.
This is a shape of things to come, unattended devices, which never get patched will be attacked and then used to attack your infrastructure.
This is why it behooves you to work hard to remove all the vulnerabilities one can.
Use our minimal Alpha Scan which allows a minimal scan and review, it is as unintrusive as viewing a webpage without any scripting.
It is important to patch all your Internet facing devices. Becasue if you don't eventually someone will use your Internet bandwidth and computing resources for their own uses.