XCSSET evolves again: Analyzing the latest updates to XCSSET’s inventory

Microsoft Threat Intelligence has identified yet another XCSSET variant in the wild that introduces further updates and new modules beyond those detailed in our March 2025 blog post. The XCSSET malware is designed to infect Xcode projects, typically used by software developers, and run while an...

Mac Users Targeted by Spyware Spreading via Xcode Projects

A campaign aimed at Mac users is spreading the XCSSET suite of malware, which has the capability to hijack the Safari web browser and inject various JavaScript payloads that can steal passwords, financial data and personal information, deploy ransomware and more. Infections are propagating via...