Cyber News

Academic researchers have disclosed a Rowhammer attack impacting NVIDIA workstation GPUs with GDDR6 memory that defeats error correction codes (ECC), the mitigation NVIDIA recommends against GPU Rowhammer, and enables denial-of-service (DoS) and privilege escalation to a root shell.

Dubbed GPUThor, the attack was developed by researchers at the University of Toronto, who hammered four DRAM

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added six flaws to its Known Exploited Vulnerabilities (KEV) catalog, including a high-severity security vulnerability impacting Citrix NetScaler ADC and NetScaler Gateway, citing evidence of active exploitation.

The vulnerabilities are listed below –

CVE-2019-1068 – A remote code execution vulnerability in 

The U.S. Department of Justice (DoJ) on Wednesday announced the disruption of two hacking platforms named QScan and QTRouter operated by Chinese threat actors to target critical infrastructure and other sensitive networks in the country.

The activity has been attributed to a Chinese state-sponsored group known as QTFY, employed by Nanjing Xinjiuwei Network Technology Company (南京鑫玖维网络科技有限公司).&

Cybersecurity researchers have discovered additional infrastructure and previously undocumented malware associated with Nimbus Manticore, an Iranian state-sponsored hacking group affiliated with the Islamic Revolutionary Guard Corps (IRGC).

Group-IB, in a new analysis published today, described the cyber espionage actor as among the most active Iranian APT groups in 2026. Nimbus Manticore (aka