Vienna declared three Russian embassy staff personae non gratae after intelligence services flagged a network of satellite dishes on Russian diplomatic buildings as a tool for intercepting communications.
Austria has expelled three Russian diplomats over suspected signals espionage conducted from the rooftops of Russian diplomatic premises in Vienna. The government confirmed the move on Monday, as Reuters reported, stating that all three had already left the country.
The “Antenna Forest” That Triggered the Expulsion
The case centres on what Austrian authorities described as an extensive array of satellite dishes installed atop buildings used by the Russian state in Vienna. The equipment was positioned at two sites: the Russian embassy compound in the Landstraße district and a diplomatic residential complex in Donaustadt. Austria’s Directorate for State Security and Intelligence (DSN) had flagged the installations for years as a potential tool for intercepting satellite communications – with data from international organisations based in Vienna among the suspected targets.
As Reuters reported, DSN chief Sylvia Mayer declined to elaborate on the timing of the expulsions at a press conference, saying only that the concern related to the size and nature of the installations.
Diplomatic Immunity Invoked, Then Overridden
The expulsion followed a failed attempt at a quieter resolution. As Die Presse reported, Austria had in April already requested that Russia waive the diplomatic immunity of the three staff members. Moscow declined, leaving Vienna with no option but to formally declare them personae non gratae.
Foreign Minister Beate Meinl-Reisinger described the case as part of a deliberate policy shift. “It is unacceptable that diplomatic immunity be used to commit espionage,” she said in a statement. The three expulsions bring to 14 the total number of Russian diplomats Austria has removed since 2020.
The Russian embassy in Vienna pushed back sharply, calling the decision “categorically unacceptable” and “exclusively politically motivated”. Moscow said the expelled individuals had served at both the embassy and Russia’s mission to the Organisation for Security and Cooperation in Europe and warned of a harsh response.
Vienna as an Espionage Hub
The case underscores Vienna’s long-standing position as one of Europe’s most active intelligence theatres. The Austrian capital hosts the OSCE, the International Atomic Energy Agency, and several other UN bodies — making it a magnet for foreign intelligence operations conducted under diplomatic cover. Larger states including Russia and the United States each maintain separate ambassadors accredited to Austria, the OSCE, and the UN, giving them a significantly larger diplomatic footprint than most countries. Vienna’s history as a divided city after World War Two further cemented its reputation as a centre for espionage activity.
Legislation to Follow
The expulsions are set to be accompanied by domestic legal changes. Under current Austrian law, foreign intelligence activity is only criminalised when directed against Austrian interests (§256 of the Criminal Code). The government is now preparing a new provision that would extend that protection to the interests of international organisations, including the EU and the UN — a significant gap given Vienna’s role as a host city. Justice Minister Anna Sporrer stated that the Austrian judiciary was working “hand in hand with all security and investigative authorities to consistently prosecute and prevent illegal intelligence activities on our territory”.
