Early this morning, after 3am EST, Matt Cutts, Google's head of search spam, seems to have confirmed that Google took action on spam in Greece recently.
Matt responded on Twitter to someone noticing penalties to Greek web sites. Matt responded saying, "ah, you noticed the action in Greece?"
Here is Matt's response:
@realpoisom ah, you noticed the action in Greece?— Matt Cutts (@mattcutts) March 24, 2014
Normally, Matt comes right out and says that they've taken action on a link network of some sorts in a specific country. Matt has not done that this time, likely because he has been busy at TED in Vancouver fort he past few days.
We did have someone post a comment on our site four days ago about noticing a "serious serps updates in Greece search results."
So it does seem something happened in Greece. Matt did basically confirm it but the big question is, what link network did Google target in Greece?
Forum discussion at Twitter.