Hackers Hijack JDownloader Site to Deliver Malware Through Installers
JDownloader confirms a security breach where hackers manipulated official download links to distribute malicious files between 6 and 7 May 2026.
Backdoor
Hackers Use Fake Claude AI Site to Infect Users With New Beagle Malware
Researchers have discovered a new malvertising campaign using a fake Claude AI website to plant a new, undocumented backdoor named Beagle on user devices.
Attackers compromised Daemon Tools software to deliver backdoors
Kaspersky researchers uncovered another supply chain compromise involving a popular Windows tool: Daemon Tools, an app for mounting disk image files as virtual drives that is widely used by gamers, developers, and IT professionals. Since April 8, 2026,…
45,000 Attacks, 5,300+ Backdoors Tied to China-Linked Cybercrime Operation
SOCRadar researchers have uncovered a massive Chinese cybercrime operation using the OpenClaw and Paperclip systems to automate global attacks.
Sophisticated Deep#Door Backdoor Enables Espionage, Disruption
The stealthy Python-based backdoor framework deploys a persistent Windows implant likely designed for espionage.
The post Sophisticated Deep#Door Backdoor Enables Espionage, Disruption appeared first on SecurityWeek.
New Linux FIRESTARTER Backdoor Targets Cisco Firepower Devices
CISA and NCSC warn that FIRESTARTER, a Linux-based backdoor, targets Cisco Firepower devices, evades patches, and enables persistent access even after firmware updates.
US Federal Agency’s Cisco Firewall Infected With ‘Firestarter’ Backdoor
The malware provides remote access and control of infected devices and maintains post-patching persistence.
The post US Federal Agency’s Cisco Firewall Infected With ‘Firestarter’ Backdoor appeared first on SecurityWeek.
New Cisco firewall malware can only be killed by pulling the plug
Suspected state-sponsored attackers are using a custom backdoor to persistently compromise Cisco security devices (firewalls), the US CISA and the UK National Cyber Security Centre warned on Thusday. “The [Firestarter] malware (…) is releva…
GopherWhisper APT group hides command and control traffic in Slack and Discord
Attackers continue to lean on everyday collaboration platforms to hide command and control traffic inside normal enterprise noise. A newly identified China-aligned APT group pushes that trend further, running its operations through Slack workspaces, Di…
Mustang Panda Hits India and S. Korea with Updated LOTUSLITE Backdoor
Acronis reveals Mustang Panda is using an updated version of LOTUSLITE backdoor to target Indian banks and Korean diplomats. Learn how this DLL sideloading attack works.