Connect with us

Hi, what are you looking for?



Cyberattack Causes Trains to Stop in Denmark

Trains stop due to cyberattack

Trains stop due to cyberattack

Trains stopped in Denmark on Saturday as a result of a cyberattack. The incident shows how an attack on a third-party IT service provider could result in significant disruption in the physical world.

According to Danish broadcaster DR, all trains operated by DSB, the largest train operating company in the country, came to a standstill on Saturday morning and could not resume their journey for several hours.

While this may sound like the work of a sophisticated threat actor that targeted operational technology (OT) systems in an effort to cause disruption, it was actually the result of a security incident at Supeo, a Danish company that provides enterprise asset management solutions to railway companies, transportation infrastructure operators and public passenger authorities.

Supeo may have been targeted in a ransomware attack. The company has not shared any information, but a DSB representative told Reuters that it was an “economic crime”.

The disruption to trains came after Supeo decided to shut down its servers as a result of the hacker attack. This led to a piece of software used by train drivers no longer working.

Supeo provides a mobile application that train drivers use to access critical operational information, such as speed limits and information on work being done to the railroad. When the subcontractor decided to shut down its servers, the application stopped working and drivers were forced to stop their trains, according to the media reports.

Threat actors attacking railways is not uncommon, with recent targets including Belarus, Italy, the UK, Israel and Iran. While researchers have shown that modern train systems are vulnerable to hackers, these recent attacks targeted websites, ticketing and other IT systems, rather than control systems.

Advertisement. Scroll to continue reading.

In the United States, the Transportation Security Administration (TSA) recently issued a new directive whose goal is to improve the cybersecurity of railroad operations.

Related: Rail System Cybersecurity Firm Cylus Raises $12 Million

Related: Researchers Link Mysterious ‘MeteorExpress’ Wiper to Iranian Train Cyberattack

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


Expert Insights

Related Content


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.


Luxury retailer Neiman Marcus Group informed some customers last week that their online accounts had been breached by hackers.


As it evolves, web3 will contain and increase all the security issues of web2 – and perhaps add a few more.


A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...


Satellite TV giant Dish Network confirmed that a recent outage was the result of a cyberattack and admitted that data was stolen.


Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.

Artificial Intelligence

The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.

Artificial Intelligence

The degree of danger that may be introduced when adversaries start to use AI as an effective weapon of attack rather than a tool...