malware
ClickFix malware attacks evolve with video instructions and OS detection
ClickFix attacks have evolved to feature videos that guide victims through the self-infection process, a timer to pressure targets into taking risky actions, and automatic detection of the operating system to provide the correct commands. In a typical ClickFix attack, the threat actor relies on social-engineering to trick users into pasting and executing code or […]
Sandworm hackers use data wipers to disrupt Ukraine’s grain sector
Russian state-backed hacker group Sandworm has deployed multiple data-wiping malware families in attacks targeting Ukraine’s education, government, and the grain sector, the country’s main revenue source. The attacks occurred in June and September, cybersecurity company ESET says in a report today, and continue Sandworm’s (a.k.a. APT44) string of destructive operations in Ukraine. As the name indicates, […]
Gootloader malware is back with new tricks after 7-month break
The Gootloader malware loader operation has returned after a 7-month absence and is once again performing SEO poisoning to promote fake websites that distribute the malware. Gootloader is a JavaScript-based malware loader spread through compromised or attacker-controlled websites, used to trick users into downloading malicious documents. The websites are promoted in search engines either via […]
Malicious Android apps on Google Play downloaded 42 million times
Hundreds of malicious Android apps on Google Play were downloaded more than 40 million times between June 2024 and May 2025, notes a report from cloud security company Zscaler. During the same period, the company observed a 67% year-over-year growth in malware targeting mobile devices, with spyware and banking trojans being a prevalent risk. Telemetry data […]
Russian hackers abuse Hyper-V to hide malware in Linux VMs
The Russian hacker group Curly COMrades is abusing Microsoft Hyper-V in Windows to bypass endpoint detection and response solutions by creating a hidden Alpine Linux-based virtual machine to run malware. Inside the virtual environment, the threat actor hosted its custom tools, the CurlyShell reverse shell and the CurlCat reverse proxy, which enabled operational stealth and communication. […]
Fake Solidity VSCode extension on Open VSX backdoors developers
A remote access trojan dubbed SleepyDuck, and disguised as the well-known Solidity extension in the Open VSX open-source registry, uses an Ethereum smart contract to establish a communication channel with the attacker. Open VSX is a community-driven registry for extensions compatible with VS Code, which are popular with AI-powered integrated development environments (IDEs) like Cursor and Windsurf. […]
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 […]
Alleged Meduza Stealer malware admins arrested after hacking Russian org
The Russian authorities have arrested three individuals in Moscow who are believed to be the creators and operators of the Meduza Stealer information-stealing malware. The action was announced on Telegram by Irina Volk, a police general and official from the Russian Ministry of Internal Affairs. “A group of hackers who created the infamous ‘Meduza’ virus have been […]
Massive surge of NFC relay malware steals Europeans’ credit cards
Near-Field Communication (NFC) relay malware has grown massively popular in Eastern Europe, with researchers discovering over 760 malicious Android apps using the technique to steal people’s payment card information in the past few months. Contrary to the traditional banking trojans that use overlays to steal banking credentials or remote access tools to perform fraudulent transactions, […]
Malicious NPM packages fetch infostealer for Windows, Linux, macOS
Ten malicious packages mimicking legitimate software projects in the npm registry download an information-stealing component that collects sensitive data from Windows, Linux, and macOS systems. The packages were uploaded to npm on July 4, and remained undetected for a long period due to multiple layers of obfuscation that helped escape standard static analysis mechanisms. According to researchers at […]