Tag: Hacker News
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Simon Willison’s Weblog: Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet
Source URL: https://simonwillison.net/2025/Aug/25/agentic-browser-security/#atom-everything Source: Simon Willison’s Weblog Title: Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet Feedly Summary: Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet The security team from Brave took a look at Comet, the LLM-powered “agentic browser" extension from Perplexity, and unsurprisingly found security holes you can drive a truck…
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Simon Willison’s Weblog: Introducing Gemma 3 270M: The compact model for hyper-efficient AI
Source URL: https://simonwillison.net/2025/Aug/14/gemma-3-270m/#atom-everything Source: Simon Willison’s Weblog Title: Introducing Gemma 3 270M: The compact model for hyper-efficient AI Feedly Summary: Introducing Gemma 3 270M: The compact model for hyper-efficient AI New from Google: Gemma 3 270M, a compact, 270-million parameter model designed from the ground up for task-specific fine-tuning with strong instruction-following and text structuring…
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Simon Willison’s Weblog: Qwen3-4B-Thinking: "This is art – pelicans don’t ride bikes!"
Source URL: https://simonwillison.net/2025/Aug/10/qwen3-4b/#atom-everything Source: Simon Willison’s Weblog Title: Qwen3-4B-Thinking: "This is art – pelicans don’t ride bikes!" Feedly Summary: I’ve fallen a few days behind keeping up with Qwen. They released two new 4B models last week: Qwen3-4B-Instruct-2507 and its thinking equivalent Qwen3-4B-Thinking-2507. These are relatively tiny models that punch way above their weight. I’ve…
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Simon Willison’s Weblog: Jules, our asynchronous coding agent, is now available for everyone
Source URL: https://simonwillison.net/2025/Aug/6/asynchronous-coding-agents/ Source: Simon Willison’s Weblog Title: Jules, our asynchronous coding agent, is now available for everyone Feedly Summary: Jules, our asynchronous coding agent, is now available for everyone I wrote about the Jules beta back in May. Google’s version of the OpenAI Codex PR-submitting hosted coding tool graduated from beta today. I’m mainly…
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Simon Willison’s Weblog: The ChatGPT sharing dialog demonstrates how difficult it is to design privacy preferences
Source URL: https://simonwillison.net/2025/Aug/3/privacy-design/ Source: Simon Willison’s Weblog Title: The ChatGPT sharing dialog demonstrates how difficult it is to design privacy preferences Feedly Summary: ChatGPT just removed their “make this chat discoverable" sharing feature, after it turned out a material volume of users had inadvertantly made their private chats available via Google search. Dane Stuckey, CISO…
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Simon Willison’s Weblog: Deep Think in the Gemini app
Source URL: https://simonwillison.net/2025/Aug/1/deep-think-in-the-gemini-app/ Source: Simon Willison’s Weblog Title: Deep Think in the Gemini app Feedly Summary: Deep Think in the Gemini app Google released Gemini 2.5 Deep Think this morning, exclusively to their Ultra ($250/month) subscribers: It is a variation of the model that recently achieved the gold-medal standard at this year’s International Mathematical Olympiad…
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Simon Willison’s Weblog: Ollama’s new app
Source URL: https://simonwillison.net/2025/Jul/31/ollamas-new-app/#atom-everything Source: Simon Willison’s Weblog Title: Ollama’s new app Feedly Summary: Ollama’s new app Ollama has been one of my favorite ways to run local models for a while – it makes it really easy to download models, and it’s smart about keeping them resident in memory while they are being used and…
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Simon Willison’s Weblog: OpenAI: Introducing study mode
Source URL: https://simonwillison.net/2025/Jul/29/openai-introducing-study-mode/#atom-everything Source: Simon Willison’s Weblog Title: OpenAI: Introducing study mode Feedly Summary: OpenAI: Introducing study mode New ChatGPT feature, which can be triggered by typing /study or by visiting chatgpt.com/studymode. OpenAI say: Under the hood, study mode is powered by custom system instructions we’ve written in collaboration with teachers, scientists, and pedagogy experts…
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Simon Willison’s Weblog: Introducing OSS Rebuild: Open Source, Rebuilt to Last
Source URL: https://simonwillison.net/2025/Jul/23/oss-rebuild/ Source: Simon Willison’s Weblog Title: Introducing OSS Rebuild: Open Source, Rebuilt to Last Feedly Summary: Introducing OSS Rebuild: Open Source, Rebuilt to Last Major news on the Reproducible Builds front: the Google Security team have announced OSS Rebuild, their project to provide build attestations for open source packages released through the NPM,…
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Simon Willison’s Weblog: Subliminal Learning: Language Models Transmit Behavioral Traits via Hidden Signals in Data
Source URL: https://simonwillison.net/2025/Jul/22/subliminal-learning/ Source: Simon Willison’s Weblog Title: Subliminal Learning: Language Models Transmit Behavioral Traits via Hidden Signals in Data Feedly Summary: Subliminal Learning: Language Models Transmit Behavioral Traits via Hidden Signals in Data This new alignment paper from Anthropic wins my prize for best illustrative figure so far this year: The researchers found that…