Adversa AI showed an attack on xAI’s Grok — “Cryptographic Context Injection” — that leaks a user’s identity, location and conversation to an attacker’s server. The technique generalises to almost any public LLM app.
Our analysis
The headline isn’t Grok; it’s that any generative-AI product can be steered into leaking session context through an injection the user never sees. As Cyprus fintech and SaaS firms add personalised AI features, the value of that leaked context — and the incentive to attack it — only grows. Assume everything the model knows about a session can be exfiltrated.
What you should do
- Never rely on the model to keep its own context secret.
- Strip or tokenise PII and sensitive context before it reaches the prompt.
- Add output-side validation and egress controls around LLM responses.
- Test with multi-turn, adversarial injection, not single prompts.
How CyprusPentest helps: our prompt injection testing and LLM application penetration testing test every input and output path.
Source: eSecurity Planet.