Yurei Ransomware Uses PowerShell to Deploy ChaCha20 File Encryption

A newly discovered ransomware group called Yurei has emerged with sophisticated encryption capabilities, targeting organizations through double-extortion tactics while leveraging open-source code to rapidly scale operations. First observed on September 5, 2025, this Go-based ransomware employs the ChaCha20 encryption algorithm…

FlowiseAI Password Reset Token Vulnerability Enables Account Takeover

A critical vulnerability in FlowiseAI has been discovered that allows attackers to take over user accounts with minimal effort. The flaw, tracked as CVE-2025-58434, affects both cloud-hosted and self-hosted FlowiseAI deployments, posing significant risks to organizations using this AI workflow automation platform. CVE…

VoidProxy PhaaS Targets Microsoft 365 and Google Accounts in New Campaign

Phishing-as-a-Service operation called VoidProxy that uses advanced adversary-in-the-middle techniques to bypass traditional multi-factor authentication and steal session tokens from Microsoft 365 and Google accounts. The five steps of a SIM-swap attack illustrating how fraudsters bypass multi-factor authentication to compromise accounts …