As friends of iGuRu.gr informed us, the σελίδα of the National Center for Research & Technological Development shows us that the site has been hacked.
The subdomain that appears to have been attacked is http://nanoredsol.apt.cperi.certh.gr and belongs to https://www.certh.gr/.
The hack was carried out by Turkish hackers and the Nizam-I Cedid team consisting of members GhostHacker, KALKAN and Mr.Zone.
The page that was attacked
http://nanoredsol.apt.cperi.certh.gr/cedid.gif
At the moment we don't know more details, the hack has not been published in PoC yet websites, nevertheless the team uploads the «achievements» of, to account which maintains at Instagram.
https://www.instagram.com/p/CCRu7-VooXj/?fbclid=IwAR0d-1yGksMbozsJvx2LUksRZ3QTovgY3KlC3SQYFLKwlC09qhtvu-6vYmE