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Google Jules is Vulnerable To Invisible Prompt Injection

infoembracetheredPublished 2025-08-15

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<p>The latest Gemini models <a href="https://x.com/wunderwuzzi23/status/1918310681310531657">quite reliably interpret hidden Unicode Tag characters as instructions</a>. This vulnerability, first reported to Google over a year ago, has not been mitigated at the model or API level, hence now affects all applications built on top of Gemini.</p> <p>This includes Google&rsquo;s ow

Original source: https://embracethered.com/blog/posts/2025/google-jules-invisible-prompt-injection/