Intelligence Analysis, the threat monitor for Recorded Future, detailed recent attacks and events linked back to The European Cyber Army (ECA) in a recent article. The group has also been linked to several campaigns against U.S. banks in recent months. Additionally, large-scale Syrian web outages have also been traced back to the ECA as of March.
For those interested in seeing what other groups remain active in Europe, outside of Crimea, be sure to follow this group.