Google is continuing their fight against link networks internationally. Google's Matt Cutts recently confirmed via Twitter that Greece was the latest country targeted for link network related penalties.
The link networks in question were reportedly networks run by SEO agencies for their clients.
It's unclear exactly which SEO agency or agencies are responsible for the link networks that were penalized.
The change in Greek search results was noticeable enough that it earned some Cutts praise:
@realpoisom ah, you noticed the action in Greece?— Matt Cutts (@mattcutts) March 24, 2014
This has simply been the most recent link network targeted by Google, which has been making a point of going after international link spam this year. Google has been making many announcements proactively advising webmasters, particularly those with websites in target locations or languages, to clean up their link profiles prior to penalties hitting.
If you suspect your websites is on the receiving end of low-quality links, you can always be proactive and work on having the links removed or submit a disavow file to Google in order to discount the links. Google has been making many announcements proactively advising webmasters to clean up their link profiles prior to penalties hitting, especially for international sites.