We just received an information that mentions deface in a subdomain of forth.gr. The page belongs to the Institute of Technology and Research (FORTH) based in Crete.
It was founded in 1983 and is one of the largest and most well-organized research centers in the country, with international recognition and highly skilled staff.
However, as it seems, their page is "crashing". See below the image from deface.
The link that the (Turkish) hackers could violate is http://contact.iceht.forth.gr/