Tag: .NET
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Unit 42: Stealthy .NET Malware: Hiding Malicious Payloads as Bitmap Resources
Source URL: https://unit42.paloaltonetworks.com/malicious-payloads-as-bitmap-resources-hide-net-malware/ Source: Unit 42 Title: Stealthy .NET Malware: Hiding Malicious Payloads as Bitmap Resources Feedly Summary: Unit 42 details a new malware obfuscation technique where threat actors hide malware in bitmap resources within .NET applications. These deliver payloads like Agent Tesla or XLoader. The post Stealthy .NET Malware: Hiding Malicious Payloads as Bitmap…
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Simon Willison’s Weblog: Gemini 2.5 Models now support implicit caching
Source URL: https://simonwillison.net/2025/May/9/gemini-implicit-caching/#atom-everything Source: Simon Willison’s Weblog Title: Gemini 2.5 Models now support implicit caching Feedly Summary: Gemini 2.5 Models now support implicit caching I just spotted a cacheTokensDetails key in the token usage JSON while running a long chain of prompts against Gemini 2.5 Flash – despite not configuring caching myself: {“cachedContentTokenCount": 200658, "promptTokensDetails":…
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Simon Willison’s Weblog: Quoting Claude’s system prompt
Source URL: https://simonwillison.net/2025/May/8/claudes-system-prompt/#atom-everything Source: Simon Willison’s Weblog Title: Quoting Claude’s system prompt Feedly Summary: If asked to write poetry, Claude avoids using hackneyed imagery or metaphors or predictable rhyming schemes. — Claude’s system prompt, via Drew Breunig Tags: drew-breunig, prompt-engineering, anthropic, claude, generative-ai, ai, llms AI Summary and Description: Yes Summary: The text pertains to…
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Simon Willison’s Weblog: llm-gemini 0.19.1
Source URL: https://simonwillison.net/2025/May/8/llm-gemini-0191/#atom-everything Source: Simon Willison’s Weblog Title: llm-gemini 0.19.1 Feedly Summary: llm-gemini 0.19.1 Bugfix release for my llm-gemini plugin, which was recording the number of output tokens (needed to calculate the price of a response) incorrectly for the Gemini “thinking" models. Those models turn out to return candidatesTokenCount and thoughtsTokenCount as two separate values…
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Simon Willison’s Weblog: Introducing web search on the Anthropic API
Source URL: https://simonwillison.net/2025/May/7/anthropic-api-search/#atom-everything Source: Simon Willison’s Weblog Title: Introducing web search on the Anthropic API Feedly Summary: Introducing web search on the Anthropic API Anthropic’s web search (presumably still powered by Brave) is now also available through their API, in the shape of a new web search tool called web_search_20250305. You can specify a maximum…
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Simon Willison’s Weblog: Create and edit images with Gemini 2.0 in preview
Source URL: https://simonwillison.net/2025/May/7/gemini-images-preview/#atom-everything Source: Simon Willison’s Weblog Title: Create and edit images with Gemini 2.0 in preview Feedly Summary: Create and edit images with Gemini 2.0 in preview Gemini 2.0 Flash has had image generation capabilities for a while now, and they’re now available via the paid Gemini API – at 3.9 cents per generated…
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Simon Willison’s Weblog: Medium is the new large
Source URL: https://simonwillison.net/2025/May/7/medium-is-the-new-large/#atom-everything Source: Simon Willison’s Weblog Title: Medium is the new large Feedly Summary: Medium is the new large New model release from Mistral – this time closed source/proprietary. Mistral Medium claims strong benchmark scores similar to GPT-4o and Claude 3.7 Sonnet, but is priced at $0.40/million input and $2/million output – about the…
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Simon Willison’s Weblog: llm-prices.com
Source URL: https://simonwillison.net/2025/May/7/llm-prices/#atom-everything Source: Simon Willison’s Weblog Title: llm-prices.com Feedly Summary: llm-prices.com I’ve been maintaining a simple LLM pricing calculator since October last year. I finally decided to split it out to its own domain name (previously it was hosted at tools.simonwillison.net/llm-prices), running on Cloudflare Pages. The site runs out of my simonw/llm-prices GitHub repository.…
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Simon Willison’s Weblog: Saying "hi" to Microsoft’s Phi-4-reasoning
Source URL: https://simonwillison.net/2025/May/6/phi-4-reasoning/#atom-everything Source: Simon Willison’s Weblog Title: Saying "hi" to Microsoft’s Phi-4-reasoning Feedly Summary: Microsoft released a new sub-family of models a few days ago: Phi-4 reasoning. They introduced them in this blog post celebrating a year since the release of Phi-3: Today, we are excited to introduce Phi-4-reasoning, Phi-4-reasoning-plus, and Phi-4-mini-reasoning – marking…
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Simon Willison’s Weblog: Gemini 2.5 Pro Preview: even better coding performance
Source URL: https://simonwillison.net/2025/May/6/gemini-25-pro-preview/#atom-everything Source: Simon Willison’s Weblog Title: Gemini 2.5 Pro Preview: even better coding performance Feedly Summary: Gemini 2.5 Pro Preview: even better coding performance New Gemini 2.5 Pro “Google I/O edition" model, released a few weeks ahead of that annual developer conference. They claim even better frontend coding performance, highlighting their #1 ranking…