22 Danish energy companies breached through firewall vulnerability
In May 2023, 22 Danish energy companies were hit by cyber-attacks exploiting a firewall vulnerability. The attack was identified as the largest coordinated attack ever targeting Denmark's critical infrastructure. A possible link to Russian hacking group Sandworm was also raised.
Key facts
- Affected organisation
- Being confirmed
- Incident type
- Hacking & intrusion
- Occurred / detected
- Not confirmed
- Scale of damage
- 22 Danish energy companies breached
- Cause / method
- Attack exploiting a firewall vulnerability
- Location
- Denmark
Timeline
- It emerged that the largest cyber-attack ever had occurred in Denmark.
- It emerged that 22 energy companies had been breached through a firewall vulnerability in May.
- A possible link between the attack and Russian hacking group Sandworm was raised.
5 related reports
- Denmark Hit With Largest Cyberattack On Record
- Nearly two dozen Danish energy companies hacked through firewall bug in May
- 22 Energy Firms Hacked in Largest Coordinated Attack on Denmark’s Critical Infrastructure
- Russia's Sandworm Linked to Unprecedented Danish Energy Hack
- Russian Hackers Linked to 'Largest Ever Cyber Attack' on Danish Critical Infrastructure
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.