Citrix Bleed 2 exploited weeks before PoCs as Citrix denied attacks

A critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed “CitrixBleed 2,” was actively exploited nearly two weeks before proof-of-concept (PoC) exploits were made public, despite Citrix stating that there was no evidence of attacks. GreyNoise has confirmed its honeypots detected targeted exploitation from IP addresses located in China on June 23, 2025. “GreyNoise has […]

Microsoft Teams voice calls abused to push Matanbuchus malware

The Matanbuchus malware loader has been seen being distributed through social engineering over Microsoft Teams calls impersonating IT helpdesk. Matanbuchus is a malware-as-a-service operation seen promoted on the dark web first in early 2021. It was advertised as a $2,500 Windows loader that executes malicious payloads directly in memory to evade detection. In June 2022, threat […]

Google sues to disrupt BadBox 2.0 botnet infecting 10 million devices

Google has filed a lawsuit against the anonymous operators of the Android BadBox 2.0 malware botnet, accusing them of running a global ad fraud scheme against the company’s advertising platforms. The BadBox 2.0 malware botnet is a cybercrime operation that utilizes infected Android Open Source Project (AOSP) devices, including smart TVs, streaming boxes, and other connected devices […]

SonicWall SMA devices hacked with OVERSTEP rootkit tied to ransomware

A threat actor has been deploying a previously unseen malware called OVERSTEP that modifies the boot process of fully-patched but no longer supported SonicWall Secure Mobile Access appliances. The backdoor is a user-mode rootkit that allows hackers to hide malicious components, maintain persistent access on the device, and steal sensitive credentials. Researchers at Google Threat […]