According to AlphaMoat, as of 2026-08, the Chrome extension AI Prompt Injection Scanner has 21 users (+40% MoM), rated 5 (1 reviews) — ranked #7,177 of 9,793 AI browser extensions, and #1,808 of 2,531 in General AI.
AI Prompt Injection Scanner checks any page for prompt-injection attacks — hidden text, zero-width characters, and suspicious meta tags designed to hijack AI assistants reading the page. It surfaces what a human can't see so your Claude or ChatGPT stays safe from invisible instructions.
Scans any page for prompt injection attacks — hidden text, zero-width characters, suspicious meta tags and more. AI Prompt Injection Scanner
What is a prompt injection attack?
AI assistants like Claude, ChatGPT, or any AI built into a browser, work by reading content and following instructions. Prompt injection is when someone hides malicious instructions inside a webpage, designed to be invisible to you but readable by the AI. The goal is to hijack the AI's behaviour: making it recommend a scam site, reveal your private data, pretend to be something it isn't, or ignore its safety guidelines entirely.
These attacks are invisible by design. The text might be white on a white background, written in a font the size of a pixel, buried in a hidden HTML comment, or disguised using invisible Unicode characters, completely undetectable to the human eye, but the AI reads every word.
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+ CompareData month: 2026-08 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.