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New Linux botnet SSHStalker uses old-school IRC for C2 comms
A newly documented Linux botnet named SSHStalker is using the IRC (Internet Relay Chat) communication protocol for command-and-control (C2) operations. The protocol was invented in 1988, and its adoption peaked during the 1990s, becoming the main text-based instant messaging solution for group and private communication. Technical communities still appreciate it for its implementation simplicity, interoperability, […]
Wave of Citrix NetScaler scans use thousands of residential proxies
A coordinated reconnaissance campaign targeting Citrix NetScaler infrastructure over the past week used tens of thousands of residential proxies to discover login panels. The activity was observed between January 28 and February 2, and it also focused on enumerating versions of the product, indicating an organized discovery effort. Threat monitoring platform GreyNoise traced the source of the […]
Hackers hijack exposed LLM endpoints in Bizarre Bazaar operation
A malicious campaign is actively targeting exposed LLM (Large Language Model) service endpoints to commercialize unauthorized access to AI infrastructure. Over a period of 40 days, researchers at Pillar Security recorded more than 35,000 attack sessions on their honeypots, which led to discovering a large-scale cybercrime operation that monetizes and exploits access to exposed or poorly authenticated AI endpoints. […]
Microsoft is retiring the Lens scanner app for iOS, Android
Microsoft has started retiring the Microsoft Lens PDF scanner app for Android and iOS devices on Friday, January 9th, with plans to remove it from app stores next month. Microsoft Lens (previously known as Office Lens) can scan both printed and handwritten text and help users convert images into PDF, Word, PowerPoint, and Excel documents. […]
Hackers target misconfigured proxies to access paid LLM services
Threat actors are systematically hunting for misconfigured proxy servers that could provide access to commercial large language model (LLM) services. In an ongoing campaign that started in late December, the attackers have probed more than 73 LLM endpoints and generated over 80,000 sessions. According to threat monitoring platform GreyNoise, the threat actors use low-noise prompts to […]
New wave of VPN login attempts targets Palo Alto GlobalProtect portals
A campaign has been observed targeting Palo Alto GlobalProtect portals with login attempts and launching scanning activity against SonicWall SonicOS API endpoints. The activity started on December 2nd and originated from more than 7,000 IP addresses from infrastructure operated by the German IT company 3xK GmbH, which runs its own BGP network (AS200373) and operates as […]
Public GitLab repositories exposed more than 17,000 secrets
After scanning all 5.6 million public repositories on GitLab Cloud, a security engineer discovered more than 17,000 exposed secrets across over 2,800 unique domains. Luke Marshall used the TruffleHog open-source tool to check the code in the repositories for sensitive credentials like API keys, passwords, and tokens. The researcher previously scanned Bitbucket, where he found 6,212 secrets spread over 2.6 million repositories. […]
GreyNoise launches free scanner to check if you’re part of a botnet
GreyNoise Labs has launched a free tool called GreyNoise IP Check that lets users check if their IP address has been observed in malicious scanning operations, like botnet and residential proxy networks. The threat monitoring firm that tracks internet-wide activity via a global sensor network says this problem has grown significantly over the past year, with many […]
GlobalProtect VPN portals probed with 2.3 million scan sessions
Malicious scanning activity targeting Palo Alto Networks GlobalProtect VPN login portals has increased 40 times in 24 hours, indicating a coordinated campaign. Real-time intelligence company GreyNoise reports that activity began climbing on November 14 and hit its highest level in 90 days within a week. “GreyNoise has identified a significant escalation in malicious activity targeting Palo Alto […]
RCE flaw in ImunifyAV puts millions of Linux-hosted sites at risk
The ImunifyAV malware scanner for Linux servers, used by tens of millions of websites, is vulnerable to a remote code execution vulnerability that could be exploited to compromise the hosting environment. The issue affects versions of the AI-bolit malware scanning component prior to 32.7.4.0. The component is present in the Imunify360 suite, the paid ImunifyAV+, and […]