New Findings Challenge Attribution in Denmark's Energy Sector Cyberattacks

The cyber attacks targeting the energy sector in Denmark last year may not have had the involvement of the Russia-linked Sandworm hacking group, new findings from Forescout show. The intrusions, which targeted around 22 Danish energy organizations in May 2023, occurred in two distinct waves, one which exploited a security flaw in Zyxel firewall (CVE-2023-28771) and a

Zyxel Releases Patches to Fix 15 Flaws in NAS, Firewall, and AP Devices

Zyxel has released patches to address 15 security issues impacting network-attached storage (NAS), firewall, and access point (AP) devices, including three critical flaws that could lead to authentication bypass and command injection. The three vulnerabilities are listed below - CVE-2023-35138 (CVSS score: 9.8) - A command injection vulnerability that could allow an

Russian Hackers Linked to 'Largest Ever Cyber Attack' on Danish Critical Infrastructure

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

DDoS Botnets Hijacking Zyxel Devices to Launch Devastating Attacks

Several distributed denial-of-service (DDoS) botnets have been observed exploiting a critical flaw in Zyxel devices that came to light in April 2023 to gain remote control of vulnerable systems. "Through the capture of exploit traffic, the attacker's IP address was identified, and it was determined that the attacks were occurring in multiple regions, including Central America, North America,