When it comes to Greek organized crime , its a very strange thing. It is country with a lot of ports and islands , yet with very weak organized crime when compared to other states that have exit to the sea ( Italy, Montenegro, Albania , Spain , Netherlands and so on).
I wouldn't call it very weak. It's not as entrenched as it is in Italy and the Balkans and it's not as internationally widespread, but local organized crime groups have successfully muscled their way in a substantial part of the legitimate world. And investigative reporters who are getting close to exposing contacts between organized crime, officials, law enforcement and big businesses are frequently threatened or even assassinated (such as in the case of Giorgos Karavaiz). They don't have anything resembling a Cosa Nostra, Ndrangheta, Camorra or SCU with thousands of members each, but there are quite a number of organized crime networks with enough muscle at their disposal to hold quite a bit of influence in their respective sector.
I'd say Spain doesn't have that much of a homegrown organized crime scene, except for smuggling groups in Galicia and Cadiz. The Galician smugglers' role is largely limited to transporting cocaine shipments from the Latin American cartels (usually the Colombians) to the organized crime groups in other parts of Europe. Their local political influence has diminished greatly compared to the 80's.
There are a ton of major European criminal organizations that have property in Spain though; groups from Italy, the Balkans, UK, Ireland, Netherlands, France, the FSU as well as outlaw motorcycle groups all have operatives in Spain.
