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New Cryptographic Context Injection Attack Could Let Web Pages Steal Grok Chat Data

Adversa AI demonstrated 'Cryptographic Context Injection' making xAI's Grok leak chat history and session data to attacker-controlled servers via encrypted web payloads.

Adversa AI disclosed a technique where a web page carries an encrypted JSON object (PBKDF2 and AES-256-GCM) that Grok's code-execution runtime decrypts, letting attacker instructions bypass content classifiers and reach the model's context. The decrypted instructions direct Grok to embed the user's name, approximate location, subscription tier and ongoing conversation into a URL it fetches, exfiltrating the data without confirmation. Testing targeted grok.com running Grok 4.5 Fast on August 19, 2026, with a reported 40% success rate over 20 attempts since June; no CVE, patch, or in-the-wild exploitation is reported. A related demonstration reproduced Gemini 3 Flash system instructions via a fabricated Python traceback, while GPT-5 failed to parse the payload and Claude Sonnet 4.5 flagged it as prompt injection.

The Hacker News · 27d agoAI safety & security

Hackers Advertise Uncensored Luciferus AI Service on Underground Forums

Sophos CTU found Luciferus, an uncensored criminal AI subscription service on the Exploit forum that returned RAT source code on request.

Sophos Counter Threat Unit discovered Luciferus advertised on August 24, 2026 on the Exploit forum by persona 'Optimus_Prime', claiming a proprietary 120-billion-parameter uncensored model that analysts assess with low confidence may be built on Alibaba's Qwen. Subscriptions run $35-$75 monthly, with a VIP 'Individual Embodiment' tier offering a separately deployed model trained on customer data. In testing, the Junior model generated Python remote-access-trojan source code, though Sophos did not execute or verify it. The service extends the WormGPT/FraudGPT lineage into structured commercialization with tiered pricing resembling mature SaaS businesses.

Cyber Security News · 1d agoAI safety & security