European intelligence agencies warn that investigations into suspected Russian interference now demand as much attention and resources as counterterrorism operations, reflecting the growing scale and sophistication of cyber and sabotage threats across the continent. The warning follows a major cyberattack on France’s national postal service at the height of the Christmas delivery season.
Postal Service Paralyzed by Pro-Russian Hackers
French prosecutors said on Wednesday that the pro-Russian hacking group Noname057(16) claimed responsibility for the attack that disrupted La Poste, France’s national postal operator. The domestic intelligence agency DGSI immediately took over the investigation, the Paris prosecutor’s office confirmed. La Poste’s central computer systems went offline on Monday in a distributed denial-of-service attack that remained unresolved by Wednesday morning. The outage prevented postal workers from tracking package deliveries and disrupted online payments at La Banque Postale, the company’s banking arm, striking at the peak of operations for a workforce exceeding 200,000 employees.
A Persistent Cyber Threat Across Europe
Noname057(16) has a history of targeting Ukrainian media outlets, government agencies and corporate sites in Poland, Sweden, Germany, and France. Its previous attacks included French government sites, such as the Ministry of Justice and multiple prefectures and city administrations. The group faced a coordinated international crackdown in July under Operation Eastwood, which involved authorities from 12 countries. During that operation, police dismantled more than 100 servers worldwide, made arrests in France and Spain, and issued seven arrest warrants, six of them for Russian nationals. Despite this, the group resumed activity within days and has remained operational.
Cyber Incidents Compound National Security Concerns
The La Poste attack occurred shortly after the French government disclosed a cyber intrusion affecting the Interior Ministry, which oversees national security. Interior Minister Laurent Nunez told Franceinfo that a suspected hacker extracted dozens of sensitive documents and accessed police records and data on wanted individuals. Last week, prosecutors revealed that France’s counterintelligence agency is investigating a cyberattack plot involving software capable of remotely controlling computer systems on an international passenger ferry. Authorities said a Latvian crew member is in custody on charges of acting on behalf of an unidentified foreign power.
Russia’s Hybrid Warfare Strategy in Europe
Nunez strongly suggested Russian involvement, noting that “foreign interference very often comes from same country,” though no formal attribution has been made. France and other European allies of Ukraine say Russia is conducting a broad campaign of “hybrid warfare” through sabotage, cyberattacks, assassinations, and disinformation aimed at sowing division in Western societies and undermining support for Ukraine. Western officials have linked scores of incidents since Russia’s full-scale invasion of February 2022 to Moscow, including arson attacks on warehouses, railway sabotage, and widespread vandalism. Against this backdrop, European intelligence agencies now treat investigations into Russian interference as seriously as threats posed by terrorism, highlighting the strategic challenge that cyber and sabotage campaigns pose to national security.

