Per http://www.chabad.gr/templates/articlecco_cdo/aid/66080/jewish/Kosher-products-list.htm

Cheese: TYRAS-OLYMPUS all cheeses (♦) TERRA AEOLICA (ΑΙΟΛΙΚΗ ΓΗ) (Lesvos) feta cheeses. (♦) (Supervised by Rabbi Silver - Kosher Technical Konsultants)  Note: It is not Chalav Israel.