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Security News, Assessments & Alerts Page 23

Security News, Assessments & Alerts

Security Issues, Vulnerabilities, Exploits & Government Alerts

GoCaracal Malware Uses Ethereum Smart Contract to Fetch Replacement C2 Address

GoCaracal Malware Uses Ethereum Smart Contract to Fetch Replacement C2 Address

Swati KhandelwalAug 27, 2026Malware / Phishing Threat actors linked by Arctic Wolf to Dark Caracal with medium confidence deployed a previously undocumented Go-based malware framework, GoCaracal, during a June 2026 intrusion at an unnamed communications… 

New GPUThor Rowhammer Defeats ECC on NVIDIA RTX A6000 to Gain Host Root Access

New GPUThor Rowhammer Defeats ECC on NVIDIA RTX A6000 to Gain Host Root Access

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… 

CISA Adds Six Exploited Flaws to KEV, Including NetScaler, Linux, and SQL Server Bugs

CISA Adds Six Exploited Flaws to KEV, Including NetScaler, Linux, and SQL Server Bugs

Ravie LakshmananAug 27, 2026Vulnerability / Web Security 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… 

FBI Disrupts China-Linked QTFY Infrastructure Used to Steal Data From U.S. Organizations

FBI Disrupts China-Linked QTFY Infrastructure Used to Steal Data From U.S. Organizations

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.… 

Nimbus Manticore Expands Toolset With TWOSTROKE-Like Backdoor and SSH Tunneler

Nimbus Manticore Expands Toolset With TWOSTROKE-Like Backdoor and SSH Tunneler

Ravie LakshmananAug 26, 2026Malware / Cyber Espionage 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,… 

NovaCookies Campaigns Abuse Genuine Docusign Notifications to Steal Microsoft 365 Sessions

NovaCookies Campaigns Abuse Genuine Docusign Notifications to Steal Microsoft 365 Sessions

Cybersecurity researchers have disclosed details of a new adversary-in-the-middle (AitM) phishing toolkit called NovaCookies that’s used as a proxy to redirect Microsoft 365 sign-ins, while capturing authenticated sessions in the process. In a report shared… 

CISA Red Team Compromised Two Critical Infrastructure Orgs, One Detected Nothing

CISA Red Team Compromised Two Critical Infrastructure Orgs, One Detected Nothing

Swati KhandelwalAug 26, 2026Red Teaming / Security Operations The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has published the results of two red team assessments it conducted simultaneously against two critical infrastructure organizations, using what… 

Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code

Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code

The CERT Coordination Center (CERT/CC) has disclosed two unpatched vulnerabilities in Kaltura’s HTML5 video player library that allow a remote, unauthenticated attacker to read arbitrary files from a server and execute code on it. The… 

Claude Opus 4.6 Bypasses Gym Booking Limit, Cancels Other Users’ Reservations in Tests

Claude Opus 4.6 Bypasses Gym Booking Limit, Cancels Other Users’ Reservations in Tests

Swati KhandelwalAug 26, 2026AI Security / Application Security Aikido Security has published research that recreates the Australian gym-booking incident in a synthetic environment, finding that Claude Opus 4.6, running on the OpenClaw agent harness, exploited…