Recent attacks targeting Jewish sites and other locations in Europe have raised alarms about a possible surge in hybrid warfare and terrorism linked to Iran. German intelligence agencies are particularly concerned about a growing threat posed by pro-Iranian extremist groups, specifically a shadowy group known as HAYI, which has claimed responsibility for several incidents including the Golders Green attack in London. Investigations are underway in the U.K. to determine the background and motives of this elusive group amid a troubling trend of arson and violence against Jewish communities. Such activities have sparked discussions about the implications of foreign influence and the rising potential for coordinated attacks across Europe.