The arrest took place on Tuesday in southwestern Poland, and the operation was part of a coordinated effort involving multiple countries and led by Europol. According to CBZC spokesperson Marcin Zagórski, the teenager was an active participant in the group's activities, which included attacks on websites of public transportation companies and state institutions.

Authorities said the suspect was connected to cyber activities organised via Telegram, where the group planned distributed denial-of-service (DDoS) attacks—techniques used to overload and shut down websites.

International Cooperation Disrupts Hacker Infrastructure
Europol reported that the joint crackdown led to the dismantling of more than 100 computer systems used by NoName057(16) worldwide, significantly impacting the group's server network. The teenager now faces four charges, including unlawful disruption of automatic data processing and possession of software intended for committing cybercrimes.

NoName057(16) initially focused its cyberattacks on Ukraine. However, the group later expanded its targets to include nations providing support to Ukraine in its defence against Russia, particularly NATO member states. The most recent reported incident occurred during the NATO summit held in The Hague on June 24.

Wider Network of Targets Revealed
The group's targets have included the Swedish government, banks, various German companies, and institutions, as well as Switzerland's Federal Assembly. DDoS attacks orchestrated by the group created widespread disruption by overwhelming servers with high volumes of internet traffic.

The 'Eastwood' operation was overseen by Europol and involved law enforcement agencies from numerous countries, including the Czech Republic, Finland, France, Germany, Italy, Lithuania, the Netherlands, Poland, Spain, Sweden, Switzerland, and the United States.

The arrest and server takedown mark a major step in efforts to disrupt politically motivated cybercrime that threatens public institutions and infrastructure across Europe.