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Simon Willison’s Weblog: 100% effective

Jun 16, 2025

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Source URL: https://simonwillison.net/2025/Jun/16/100-percent/#atom-everything Source: Simon Willison’s Weblog Title: 100% effective Feedly Summary: Every time I get into an online conversation about prompt injection it’s inevitable that someone will argue that a mitigation which works 99% of the time is still worthwhile because there’s no such thing as a security fix that is 100% guaranteed to…

Simon Willison’s Weblog: The lethal trifecta for AI agents: private data, untrusted content, and external communication

Jun 16, 2025

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Kurt Seifried

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Source URL: https://simonwillison.net/2025/Jun/16/the-lethal-trifecta/#atom-everything Source: Simon Willison’s Weblog Title: The lethal trifecta for AI agents: private data, untrusted content, and external communication Feedly Summary: If you are a user of LLM systems that use tools (you can call them “AI agents" if you like) it is critically important that you understand the risk of combining tools…

Slashdot: Meta’s Llama 3.1 Can Recall 42% of the First Harry Potter Book

Jun 15, 2025

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Kurt Seifried

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Source URL: https://slashdot.org/story/25/06/15/2230206/metas-llama-31-can-recall-42-of-the-first-harry-potter-book?utm_source=rss1.0mainlinkanon&utm_medium=feed Source: Slashdot Title: Meta’s Llama 3.1 Can Recall 42% of the First Harry Potter Book Feedly Summary: AI Summary and Description: Yes Summary: The text discusses significant findings from a research study that highlights the memorization capabilities of Llama 3.1 70B, an AI model from Meta. It raises concerns about potential legal…

Simon Willison’s Weblog: An Introduction to Google’s Approach to AI Agent Security

Jun 15, 2025

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Kurt Seifried

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Source URL: https://simonwillison.net/2025/Jun/15/ai-agent-security/#atom-everything Source: Simon Willison’s Weblog Title: An Introduction to Google’s Approach to AI Agent Security Feedly Summary: Here’s another new paper on AI agent security: An Introduction to Google’s Approach to AI Agent Security, by Santiago Díaz, Christoph Kern, and Kara Olive. (I wrote about a different recent paper, Design Patterns for Securing…

Google Online Security Blog: Mitigating prompt injection attacks with a layered defense strategy

Jun 13, 2025

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Kurt Seifried

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Source URL: http://security.googleblog.com/2025/06/mitigating-prompt-injection-attacks.html Source: Google Online Security Blog Title: Mitigating prompt injection attacks with a layered defense strategy Feedly Summary: AI Summary and Description: Yes **Summary:** The text discusses emerging security threats associated with generative AI, particularly focusing on indirect prompt injections that manipulate AI systems through hidden malicious instructions. Google outlines its layered security…

Simon Willison’s Weblog: Design Patterns for Securing LLM Agents against Prompt Injections

Jun 13, 2025

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Kurt Seifried

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Source URL: https://simonwillison.net/2025/Jun/13/prompt-injection-design-patterns/#atom-everything Source: Simon Willison’s Weblog Title: Design Patterns for Securing LLM Agents against Prompt Injections Feedly Summary: This a new paper by 11 authors from organizations including IBM, Invariant Labs, ETH Zurich, Google and Microsoft is an excellent addition to the literature on prompt injection and LLM security. In this work, we describe…

Cisco Talos Blog: Know thyself, know thy environment

Jun 12, 2025

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Kurt Seifried

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Source URL: https://blog.talosintelligence.com/know-thyself-know-thy-environment/ Source: Cisco Talos Blog Title: Know thyself, know thy environment Feedly Summary: In this week’s edition, Bill explores the importance of self-awareness and building repeatable processes to better secure your environment. AI Summary and Description: Yes **Summary:** The content addresses important security vulnerabilities discovered in popular software, highlights the ongoing need for…

Cloud Blog: Cloud CISO Perspectives: How Google secures AI Agents

Jun 12, 2025

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Kurt Seifried

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Source URL: https://cloud.google.com/blog/products/identity-security/cloud-ciso-perspectives-how-google-secures-ai-agents/ Source: Cloud Blog Title: Cloud CISO Perspectives: How Google secures AI Agents Feedly Summary: Welcome to the first Cloud CISO Perspectives for June 2025. Today, Anton Chuvakin, security advisor for Google Cloud’s Office of the CISO, discusses a new Google report on securing AI agents, and the new security paradigm they demand.As…

CSA: DNS Posture Management: Close DNS Security Gaps

Jun 12, 2025

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Kurt Seifried

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Source URL: https://checkred.com/resources/blog/dns-posture-management-dnspm-closing-the-blind-spot-in-enterprise-dns-security/ Source: CSA Title: DNS Posture Management: Close DNS Security Gaps Feedly Summary: AI Summary and Description: Yes **Summary:** The text emphasizes the underappreciation of the Domain Name System (DNS) in cloud security strategies, identifying it as a significant vulnerability within multi-cloud environments. It introduces DNS Posture Management (DNSPM) as a necessary practice…

Simon Willison’s Weblog: Breaking down ‘EchoLeak’, the First Zero-Click AI Vulnerability Enabling Data Exfiltration from Microsoft 365 Copilot

Jun 11, 2025

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Kurt Seifried

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Source URL: https://simonwillison.net/2025/Jun/11/echoleak/ Source: Simon Willison’s Weblog Title: Breaking down ‘EchoLeak’, the First Zero-Click AI Vulnerability Enabling Data Exfiltration from Microsoft 365 Copilot Feedly Summary: Breaking down ‘EchoLeak’, the First Zero-Click AI Vulnerability Enabling Data Exfiltration from Microsoft 365 Copilot Aim Labs reported CVE-2025-32711 against Microsoft 365 Copilot back in January, and the fix is…

Tag: defense