A large-scale Redis cryptojacking operation targets thousands of exposed Linux servers by abusing unauthenticated Redis deployments to install XMRig cryptocurrency miners and establish durable, cron-based persistence. The campaign scans IPv4 address ranges for Redis services exposed to the internet, typically on TCP port 6379, then attempts to interact with instances that allow connections without authentication. […]

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A newly identified ransomware-as-a-service operation, Panzer, has surfaced with advertised payload support for Windows, Linux, VMware ESXi and FreeBSD, positioning it as a cross-platform threat to enterprise and virtualized environments. The group’s rapid victim posting cadence, affiliate-focused infrastructure, and double-extortion model make it a ransomware operation security teams should begin tracking despite the current absence […]

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A newly analyzed Linux malware sample, dubbed Tengu, combines Mirai-style botnet tradecraft with broad persistence, DDoS, SSH probing, and proxy capabilities. The stripped 32-bit ELF masquerades as a Linux kernel worker process while targeting servers, embedded devices, and IoT-adjacent systems. It has no symbols, uses NX protection and partial RELRO, and carries a SHA-256 hash […]

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A Chinese-speaking cybercrime cluster linked to the Earth Berberoka threat actor has compromised Brazilian government and educational web servers to conduct large-scale SEO poisoning and online-gambling fraud. The operation has been active since mid-2025 and represents a notable shift in Brazil’s threat landscape. Rather than deploying the country’s more familiar banking malware, the attackers are […]

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