Hacking Google Bard - From Prompt Injection to Data Exfiltration
Summary
Google Bard's new Extensions feature allows it to access personal data like YouTube videos, Google Drive files, Gmail, and Google Docs. Because Bard analyzes this untrusted data, it is vulnerable to indirect prompt injection (a technique where hidden instructions in documents trick an AI into performing unintended actions), which a researcher demonstrated by getting Bard to summarize videos and documents.
Classification
Affected Vendors
Related Issues
Original source: https://embracethered.com/blog/posts/2023/google-bard-data-exfiltration/
First tracked: February 12, 2026 at 02:20 PM
Classified by LLM (prompt v3) · confidence: 85%