In recent months, cybersecurity researchers have observed a surge in malicious domain registrations linked to an emerging e-crime group known as PoisonSeed. First identified in April 2025, this actor has focused its efforts on impersonating legitimate cloud-based email platforms, most notably SendGrid, to harvest enterprise credentials. By embedding fake Cloudflare CAPTCHA interstitials and Ray ID […] The post PoisonSeed Threat Actor Registering New Domains in Attempt to Compromise Enterprise Credentials appeared first on Cyber Security News.

A sophisticated new remote access trojan named ZynorRAT has emerged as a cross-platform threat, targeting both Windows and Linux systems through an innovative Telegram-based command and control infrastructure. First discovered in July 2025, this Go-compiled malware represents a significant evolution in remote access capabilities, combining traditional RAT functionality with modern communication channels to evade detection […] The post ZynorRAT Attacking Windows and Linux Systems to Gain Remote Access appeared first on Cyber Security News.

ChillyHell first surfaced on public malware repositories in early May 2025, although its developer-signed notarization dates back to 2021. This modular backdoor has eluded detection by major antivirus vendors despite leveraging Apple’s own notarization process to appear legitimate. By masquerading as a benign macOS applet, ChillyHell gains an initial foothold on target machines before deploying […] The post ChillyHell macOS Malware Profiles Compromised Machines and Maintain Persistence with 3 Methods appeared first on Cyber Security News.