Warden Stealer Malware Targets Claude, Codex, Grok and Cursor to Steal AI Agent Data

A rapidly growing malware-as-a-service operation dubbed Warden Stealer is targeting data stored by AI assistants and coding agents, including Claude, Codex, Grok, and Cursor, GBHackers reports. The Rust-based stealer exfiltrates AI agent data such as API keys and stored conversations.