Backdoor
BambooToken malware controls Windows and Linux systems via MQTT
A previously unknown malware framework called BambooToken, active since at least 2023, is now using the Message Queuing Telemetry Transport (MQTT) protocol to communicate with Windows and Linux systems. The malware adopted MQTT for command-and-control communications in variants developed between 2024 and 2025, compromising servers used by mobile apps, legal and financial services, and software […]
Artifactory flaws chained in attacks deploying backdoor malware
Threat actors are exploiting critical and high-severity vulnerabilities in JFrog Artifactory to bypass authentication, gain administrative privileges, and deploy a Rust backdoor on vulnerable self-hosted servers. A new report from cloud security company Wiz confirmed exploitation across multiple environments, including an exploit chain that combines CVE-2026-42018 and CVE-2026-42016. The third vulnerability is CVE-2026-82329, a critical […]
Hackers breach F5 BIG-IP APM devices to deploy Linux rootkit
A Linux rootkit targeting devices in F5 BIG-IP APM environments can intercept PHP file loading and inject a fileless web shell directly into memory, avoiding the need to write malicious code to disk. The malware shows signs of being a second-stage payload that was likely deployed after exploiting CVE-2025-53521, a critical remote code execution (RCE) flaw […]
Adobe fixes critical Magento zero-day exploited to backdoor servers
Adobe has released an emergency fix for CVE-2026-75650, an actively exploited max-severity zero-day vulnerability dubbed StyleSmuggler, that impacts multiple versions of Magento and Adobe Commerce. E-commerce security company Sansec discovered that the flaw has been leveraged in attacks since at least September 4 to plant a backdoor on vulnerable websites. The backdoor disguised its command-and-control (C2) host […]
New ClickLock macOS malware traps users into revealing login password
A new macOS information-stealing malware dubbed ClickLock terminates all visible processes to force users into entering their system login password. The malware is designed to steal cryptocurrency assets, login credentials, password-manager data, browser information, and macOS authentication data, and it can also install a persistent backdoor for ongoing remote access to infected systems. Researchers at […]
Hidden backdoor in Tenda router firmware grants admin access
A hidden authentication backdoor has been found in multiple Tenda router firmware versions, potentially allowing an attacker to gain administrative access to the device’s web management panel. According to a security bulletin from the CERT Coordination Center, the issue remains unfixed because the Chinese maker of the networking equipment couldn’t be reached. CERT/CC says the […]
Malicious PyPI packages give hackers control of Telegram bot servers
A campaign active since last November has been targeting Python developers building Telegram bots with trojanized Pyrogram forks that allow attackers to read arbitrary files on compromised servers. At least eight packages have been published on the Python Package Index (PyPI) with a hidden backdoor that is activated by helper modules when importing Pyrogram or […]
Malicious Edge extension abuses Native Messaging as bridge to malware
A malicious Microsoft Edge extension dubbed ‘Edgecution’ has been used in a ransomware attack to escape the browser sandbox and deploy a Python-based backdoor. Access to the local system is obtained by leveraging the Chrome Native Messaging protocol that allows browser extensions to interact with native desktop applications, such as a password manager communicating with […]
Stealthy Mistic backdoor linked to ransomware access broker KongTuke
A new backdoor dubbed Mistic has been observed in financially motivated attacks targeting organizations in the insurance, education, IT, and professional services sectors. The malware is believed to be linked to KongTuke/Woodgnat, an initial access broker active since at least 2024 that specializes in compromising corporate networks and selling that access to ransomware groups, including […]
WordPress malware campaign hides payloads in Steam profiles
Nearly 2,000 WordPress websites were infected with malware that relies on Steam Community profile comments to hide command-and-control (C2) data. The threat actor used invisible Unicode characters to encode a payload that builds a URL to a malicious script. By leveraging Valve’s platform, the attacker avoids maintaining a separate C2 infrastructure and evades traditional detection […]