So the oldest mention I did find, is from the 21st of October [0] and then more at the 23rd. [2,3] So until I see an actual zombie, my money is on a ghost story for Halloween.

[0] https://twitter.com/dragosr/status/392348130101829632 [1] https://kabelmast.wordpress.com/2013/10/23/badbios-and-lotsa... [2] https://plus.google.com/103470457057356043365/posts/9fyh5R9v...