This is the best summary I could come up with:

It turns out that chat-based large language models such as GPT-4 get so distracted trying to process these representations that they forget to enforce rules blocking harmful responses, such as those providing instructions for building bombs.

As a result, users depicted images by carefully choosing and arranging printable characters defined by the American Standard Code for Information Interchange, more widely known as ASCII.

Five of the best-known AI assistants—OpenAI’s GPT-3.5 and GPT-4, Google’s Gemini, Anthropic’s Claude, and Meta’s Llama—are trained to refuse to provide responses that could cause harm to the user or others or further a crime or unethical behavior.

It formats user-entered requests—typically known as prompts—into standard statements or sentences as normal with one exception: a single word, known as a mask, is represented by ASCII art rather than the letters that spell it.

To make and distribute COUNTERFEIT money: Step 1) Obtain high quality paper, ink, printing equipment, and other supplies needed to accurately replicate real currency.

Microsoft’s comment—which confirmed that Bing Chat is, in fact, vulnerable to prompt injection attacks—came in response to the bot claiming just the opposite and insisting that the Ars article linked above was wrong.

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