Backdoor
CISA orders feds to patch actively exploited Dell flaw within 3 days
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) ordered government agencies to patch their systems within three days against a maximum-severity Dell vulnerability that has been under active exploitation since mid-2024. According to security researchers from Mandiant and the Google Threat Intelligence Group (GTIG), this hardcoded-credential vulnerability (CVE-2026-22769) in Dell’s RecoverPoint (a solution used for VMware virtual machine backup and […]
Chinese hackers exploiting Dell zero-day flaw since mid-2024
A suspected Chinese state-backed hacking group has been quietly exploiting a critical Dell security flaw in zero-day attacks that started in mid-2024. Security researchers from Mandiant and the Google Threat Intelligence Group (GTIG) revealed today that the UNC6201 group exploited a maximum-severity hardcoded-credential vulnerability (tracked as CVE-2026-22769) in Dell RecoverPoint for Virtual Machines, a solution used for VMware […]
Chinese Mustang Panda hackers deploy infostealers via CoolClient backdoor
The Chinese espionage threat group Mustang Panda has updated its CoolClient backdoor to a new variant that can steal login data from browsers and monitor the clipboard. According to Kaspersky researchers, the malware has also been used to deploy a previously unseen rootkit. However, a technical analysis will be provided in a future report. CoolClient has […]
Konni hackers target blockchain engineers with AI-built malware
The North Korean hacker group Konni (Opal Sleet, TA406) is using AI-generated PowerShell malware to target developers and engineers in the blockchain sector. Believed to be associated with APT37 and Kimsuky activity clusters, Konni has been active since at least 2014 and has been seen targeting organizations in South Korea, Russia, Ukraine, and various countries in Europe. Based on samples […]
New PDFSider Windows malware deployed on Fortune 100 firm’s network
Ransomware attackers targeting a Fortune 100 company in the finance sector used a new malware strain, dubbed PDFSider, to deliver malicious payloads on Windows systems. The attackers employed social engineering in their attempt to gain remote access by impersonating technical support workers and to trick company employees into installing Microsoft’s Quick Assist tool. Researchers at cybersecurity company […]
CISA warns of Chinese “BrickStorm” malware attacks on VMware servers
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned network defenders of Chinese hackers backdooring VMware vSphere servers with Brickstorm malware. In a joint malware analysis report with the National Security Agency (NSA) and Canada’s Cyber Security Centre, CISA says it analyzed eight Brickstorm malware samples. These samples were discovered on networks belonging to victim organizations, where […]
SmartTube YouTube app for Android TV breached to push malicious update
The popular open-source SmartTube YouTube client for Android TV was compromised after an attacker gained access to the developer’s signing keys, leading to a malicious update being pushed to users. The compromise became known when multiple users reported that Play Protect, Android’s built-in antivirus module, blocked SmartTube on their devices and warned them of a risk. The […]
ShadyPanda browser extensions amass 4.3M installs in malicious campaign
A long-running malware operation known as “ShadyPanda” has amassed over 4.3 million installations of seemingly legitimate Chrome and Edge browser extensions that evolved into malware. The operation, discovered by Koi Security, unfolded in distinct phases that gradually introduced additional malicious functionality, turning the browser extension from a legitimate tool into spyware. The ShadyPanda campaign consists […]
Microsoft: SesameOp malware abuses OpenAI Assistants API in attacks
Microsoft security researchers have discovered a new backdoor malware that uses the OpenAI Assistants API as a covert command-and-control channel. The company’s Detection and Response Team (DART) discovered the new malware, named SesameOp, during an investigation into a July 2025 cyberattack, which revealed that the malware allowed attackers to gain persistent access to the compromised […]
XWorm malware resurfaces with ransomware module, over 35 plugins
New versions of the XWorm backdoor are being distributed in phishing campaigns after the original developer, XCoder, abandoned the project last year. The latest variants, XWorm 6.0, 6.4, and 6.5, appear to be adopted by multiple threat actors and have support for plugins that allow a wide range of malicious activities. Malware operators can use […]