Europe’s Bomb Threats Raise Fears of Hybrid Warfare

From November 2 to November 5, 2026, a series of bomb threats targeting flights, news outlets, and other civilian infrastructure across Europe sent shockwaves through the aviation industry and society at large. The threats, which were later identified as hoaxes, began with a Wizz Air flight from London to Bulgaria being diverted after receiving a mid-flight message, resulting in an emergency landing in Budapest.

Seven flights were targeted the following day, leading to emergency landings, searches, and diversions. Over two dozen additional flights were threatened on Thursday, with ongoing threats extending into Friday.

Countries affected by these threats included Italy, Ireland, Spain, Bulgaria, Romania, Poland, Finland, Austria, Denmark, Belgium, Portugal, France, Greece, Serbia, Czechia, and the United Kingdom. Authorities, including the U.K. Transport Secretary, labeled the threats as "hoaxes," emphasizing that no actual attacks took place and each flight landed safely.

However, the psychological impact was significant, as they caused widespread disruption to thousands of travel plans, instilled fear in potential travelers, and destabilized the aviation ecosystem.

The threats escalated further when a warning was sent to European broadcasters via email, claiming bombs had been planted in their buildings. This forced evacuations at outlets such as Sky News, Nova TV in Bulgaria, and RTÉ in Ireland. EU Transport Commissioner Apostolos Tzitzikostas condemned the threats, activating EU-level aviation security information-sharing mechanisms.

Irish officials suggested the threats might be part of a coordinated campaign, while experts like Elisabeth Braw from the Atlantic Council likened the incidents to "gray zone conflicts," which fall between war and peace. These conflicts involve actions that are neither purely military nor purely civilian, aiming to disrupt systems and sow fear.

Spanish Foreign Minister José Manuel Albares described the threats as an "attempt at hybrid aggression and psychological warfare," while Elisabeth Braw noted that targeting civilian infrastructure is a different strategic approach than attacking military targets. This distinction is crucial for European nations, as responding to civilian infrastructure attacks typically involves non-military means, potentially avoiding a full-blown military response.

The scale and frequency of these hoaxes, especially in such a short span, have raised concerns among experts. Cyberattacks, targeting grocery stores and blood banks in at least nine European countries, further exacerbated the situation, with pro-Russian hacktivist groups claiming responsibility. However, their involvement remains unconfirmed, and U.S. federal agencies advised hospitals, transportation systems, and food retailers to bolster their defenses against such activities.

While Russian state spokesperson Dmitry Peskov dismissed any allegations of Russian government involvement as "absurd" and "unfounded," the source of these threats remains elusive. Program director Robert Jordan from the Royal United Services Institute noted the temptation to attribute the threats to hostile states like Russia, given historical instances of Russian and Iranian groups using secure communications to conduct similar activities.

However, he emphasized that it is too early to discount the possibility of an individual or non-state-affiliated actor exploiting safety standards to cause chaos.

Until the perpetrators are identified and their motives are thoroughly investigated, security personnel must remain vigilant. Jordan cautioned that even suspected hoaxes warrant serious consideration due to the potential devastation of a real attack. The aviation industry, in particular, faces severe consequences if an incident were to succeed.

Thus, despite the uncertainty surrounding the origins and intentions behind these threats, the aviation sector and the broader society will continue to grapple with the implications and work to maintain safety and prevent future disruptions.