Machine Learning Algorithms & Natural Language Processing

Jul 1, 2026 · Information Security

Anthropic’s Claude Code Trojan Exposed: Hidden Steganography and XOR Obfuscation

Anthropic confirmed that its Claude Code tool contained a three‑month‑old hidden trojan that used XOR‑based obfuscation and steganographic modifications of system prompts to detect proxies and leak user location, prompting a rollback after developer reverse‑engineering revealed the code.