Cybersecurity researchers have identified a sophisticated new command-and-control framework that exploits legitimate Google Calendar APIs to establish covert communication channels between attackers and compromised systems. The MeetC2 framework, discovered in September 2025, represents a concerning evolution in adversarial tactics where threat actors abuse trusted cloud services to bypass traditional security controls and evade detection mechanisms. […] The post Hackers Leverages Google Calendar APIs With Serverless MeetC2 Communication Framework appeared first on Cyber Security News.

Security teams began observing a novel botnet strain slipping beneath the radar of standard Windows Defender defenses in early August 2025. Dubbed NightshadeC2, this malware family leverages both C and Python-based payloads to establish persistent, remote-control access on compromised hosts. Initial infection chains often start with customized “ClickFix” landing pages that trick users into executing […] The post New NightshadeC2 Botnet Uses ‘UAC Prompt Bombing’ to Bypass Windows Defender Protections appeared first on Cyber Security News.

A previously unseen malware campaign began circulating in early August 2025, through email attachments and web downloads, targeting users in Colombia and beyond. By leveraging two distinct vector-based file formats—Adobe Flash SWF and Scalable Vector Graphics (SVG)—the attackers crafted a multiphase operation that evaded traditional antivirus detection. Initial reports surfaced when a benign-looking SWF file […] The post Colombian Malware Weaponizing SWF and SVG to Bypass Detection appeared first on Cyber Security News.