As his friends told us iGuRu.gr, the page of the National Center for Research & Technological Development shows us that the site has been hacked.
The subdomains which appears to have been attacked is the http://nanoredsol.apt.cperi.certh.gr and belongs to https://www.certh.gr/.
The hack was done by Turkish hackers and the team Nizam-I Cedid 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» her, on the account she maintains on instagram.
https://www.instagram.com/p/CCRu7-VooXj/?fbclid=IwAR0d-1yGksMbozsJvx2LUksRZ3QTovgY3KlC3SQYFLKwlC09qhtvu-6vYmE