No harm to post the response here as well:-):

Hi,
This is because ebay’s advertisement network has been compromised and is showing fake (java and flash, mostly) updates. They are working on it to resolve the issue.
Malekal pointed this first on his blog: http://www.malekal.com/2014/05/20/ebay-virus-lpmxp2-lecteur-video-peux-etre-obsolete/
Best
Honza