--- title: Google Online Security Blog: Google Workspace’s... description: Google's GenAI Security Team outlines their continuous strategy for defending Google Workspace with Gemini against indirect prompt injection (IPI) attacks. The... canonical: https://daily.dev/posts/google-online-security-blog-google-workspace-s-continuous-approach-to-mitigating-indirect-prompt-in-wk84x3nh5 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Google Online Security Blog: Google Workspace’s continuous approach to mitigating indirect prompt injections | daily.dev og:description: Google's GenAI Security Team outlines their continuous strategy for defending Google Workspace with Gemini against indirect prompt injection (IPI) attacks. The... og:url: https://daily.dev/posts/google-online-security-blog-google-workspace-s-continuous-approach-to-mitigating-indirect-prompt-in-wk84x3nh5 og:image: https://api.daily.dev/og/posts/WK84X3nh5.png og:image:alt: Google Online Security Blog: Google Workspace’s continuous approach to mitigating indirect prompt injections og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Google Online Security Blog: Google Workspace’s continuous approach to mitigating indirect prompt injections **[Google Security Blog](https://daily.dev/sources/security-google)** · 6 min read · 0 upvotes · 0 comments ## Summary Google's GenAI Security Team outlines their continuous strategy for defending Google Workspace with Gemini against indirect prompt injection (IPI) attacks. The approach combines human and automated red-teaming, an AI Vulnerability Rewards Program, open-source intelligence monitoring, and a structured vulnerability catalog. Newly discovered attacks are expanded into synthetic training data using a tool called Simula, boosting data generation by 75%. Defenses span three layers: deterministic rules (URL sanitization, tool chaining policies), ML-based classifiers retrained on synthetic data, and LLM-based prompt engineering. Additionally, Gemini model hardening trains the model itself to recognize and ignore injected instructions. Defense effectiveness is measured via end-to-end simulations across Workspace apps like Gmail and Docs, comparing attack success rates before and after each defense update. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Indirect Malicious Prompt Technique Targets Google Gemini Enterprise](https://daily.dev/posts/indirect-malicious-prompt-technique-targets-google-gemini-enterprise-frfvbvclj) · Security Boulevard · 0 upvotes · 0 comments --- Tags: [#google-gemini](https://daily.dev/tags/google-gemini), [#prompt-injection](https://daily.dev/tags/prompt-injection), [#red-teaming](https://daily.dev/tags/red-teaming) [View this post on daily.dev](https://daily.dev/posts/google-online-security-blog-google-workspace-s-continuous-approach-to-mitigating-indirect-prompt-in-wk84x3nh5) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Google Online Security Blog: Google Workspace’s continuous approach to mitigating indirect prompt injections","url":"https://daily.dev/posts/google-online-security-blog-google-workspace-s-continuous-approach-to-mitigating-indirect-prompt-in-wk84x3nh5","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/google-online-security-blog-google-workspace-s-continuous-approach-to-mitigating-indirect-prompt-in-wk84x3nh5"},"datePublished":"2026-04-02T20:24:00.850Z","dateModified":"2026-04-02T20:24:25.702Z","description":"Google's GenAI Security Team outlines their continuous strategy for defending Google Workspace with Gemini against indirect prompt injection (IPI) attacks. 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