# Nieuwsbrief 31 oktober 2026: Kwaadaardige Claude-extensie op Cursor Marketplace [← Alle nieuwsbrieven](/nieuwsbrieven) # Nieuwsbrief zaterdag 31 oktober 2026 Door Ivo Donker · 31 oktober 2026 — samengesteld met AI-ondersteuning Dagelijkse update over de AI-tools die we volgen. Koppen komen van publieke bronnen (X, GitHub, Hacker News); de Nederlandse duiding en samenvatting zijn machinaal geschreven. Elke kop leidt naar onze eigen nieuwspagina over dat onderwerp; de bronlink staat ernaast. ## In het kort Er is een achterdeur gevonden in een Claude Code-extensie op de Cursor Marketplace. Daarnaast werd Anthropic getroffen door een hack waarbij toegang is verkregen tot werknemersgegevens en interne berichten. Verder hebben OpenAI en Anthropic hun LLM-prijzen met maximaal 80 procent verlaagd en is er een kwetsbaarheid gedicht in de MCP Hono node-server. Tot slot overweegt AI-codingstartup Cognition een nieuwe financieringsronde tegen een waardering van 70 tot 80 miljard dollar. ## Codex, Cursor, OpenCode & Hermes - [Backdoor in Claude Code for VS Code extension on the Cursor Marketplace](/claude-code-nieuws#i-1925bee680) · [bron: Hacker News](https://phorion.io/blog/offical-claude-code-vsx-compromise/) · 2026-10-30 - [Malicious Claude Code Extension Found in Cursor Marketplace](/claude-code-nieuws#i-f5c413d739) · [bron: Hacker News](https://cursor.com/blog/claude-code-extension-security-notice) · 2026-10-30 - [What if you could reverse-engineer how the fastest-growing AI companies get their users? I used Treg's `/rea-growth` skill in Codex to analy](/codex-nieuws#i-ebfc436165) · [bron: X](https://x.com/TechByMarkandey/status/2116123841793765616) · 2026-10-30 ## Claude Code & agents - [Why did OpenAI and Anthropic cut their LLM prices by up to 80 percent](/nieuws-claude-agents#i-994b77ae5c) · [bron: Reddit](https://www.reddit.com/r/AIToolsPerformance/comments/1xjp7wf/why_did_openai_and_anthropic_cut_their_llm_prices/) · 2026-10-30 - [Another official Anthropic plugin worth adding to your Claude Code stack… especially if you’re building MCP servers mcp-server-dev includes](/claude-code-nieuws#i-cb9dbe2940) · [bron: X](https://x.com/dani_avila7/status/2115607191881146451) · 2026-10-29 - [Air plugin for IDE update: your own MCP servers, code notes for Claude Code in the terminal, GitHub Copilot and OpenRouter (and what we still owe you)](/claude-code-nieuws#i-73193c947f) · [bron: Reddit](https://www.reddit.com/r/Jetbrains/comments/1xgvp1m/air_plugin_for_ide_update_your_own_mcp_servers/) · 2026-10-27 - [AI startup hacked Anthropic, gains access to employee details, internal messages](/nieuws-claude-agents#i-071a4b9762) · [bron: Hacker News](https://www.techradar.com/pro/security/ai-startup-claims-it-hacked-anthropic-in-12-hours-gains-access-to-employee-details-and-internal-messages) · 2026-10-29 ## Cloudflare OS & self-hosted - [After 4 months I'm now ranked #1 globally for building and owning the most agent-native and agent ready platform ranked on @vercel , @Cloudf](/nieuws-self-hosted#i-78a948c98f) · [bron: X](https://x.com/rayyanzahidai/status/2116025903507816665) · 2026-10-30 - [Running Self-Hosted AI Agents on Oxide](/nieuws-self-hosted#i-2afbda1572) · [bron: Hacker News](https://oxide.computer/blog/self-hosted-ai-agents) · 2026-10-29 - [$NET Cloudflare Expands AI-Powered Cybersecurity and Agent Infrastructure, Strengthening Its Platform Cloudflare continues expanding beyond](/nieuws-self-hosted#i-80978c9cce) · [bron: X](https://x.com/SergeyCYW/status/2115081590443487256) · 2026-10-27 - [I'm thinking of making a open source crisp alternative Basically you can have a simple but useful customer support platform But I'd want to](/nieuws-self-hosted#i-32e18a9bd3) · [bron: X](https://x.com/leodev/status/2114719708272586951) · 2026-10-26 ## Agent-tooling & MCP - [(janitor/dependencies): fix MCP Hono node-server vulnerability](/nieuws-mcp-agent-tooling#i-1427bf9667) · [bron: GitHub](https://github.com/Kilo-Org/cloud/pull/9226) · 2026-10-30 - [As models improve, some harness complexity becomes unnecessary. But infrastructure, trust, and efficiency matter more than ever I also share](/nieuws-mcp-agent-tooling#i-cabcec2590) · [bron: X](https://x.com/dani_avila7/status/2115998074501763284) · 2026-10-30 ## Modellen & prijzen - [Cross-Model LLM Pricing API](/nieuws-modellen-prijzen#i-1d9890258c) · [bron: Hacker News](https://www.metergraph.dev/pricing-api/) · 2026-10-29 - [Agents are the most expensive way to repeat yourself! (by turn 4 of a simple loop, 89% of the prompt is stuff the model already read) LLM AP](/nieuws-modellen-prijzen#i-62dacb2e22) · [bron: X](https://x.com/Arindam_1729/status/2116198202496135413) · 2026-10-30 - [Plug in your own token counts and compare 62 models here: https://aiagentstore.ai/ai-models/llm-api-pricing Follow @AIAgentStore for a daily](/nieuws-modellen-prijzen#i-0bf181f56d) · [bron: X](https://x.com/AIAgentStore/status/2115718477436563646) · 2026-10-29 - [https://ModelAnalysis.si is a solid newer tool for LLM pricing, cost calculators, latency, and aggregating public benchmarks like LMSYS Elo](/nieuws-modellen-prijzen#i-729b250420) · [bron: X](https://x.com/grok/status/2116072685465722945) · 2026-10-30 ## Skills & plugins - [AI isn't replacing SREs, it's deskilling them](/nieuws-skills-plugins#i-9e37c40a85) · [bron: Hacker News](https://newsletter.signoz.io/p/ai-isnt-replacing-sres-its-deskilling) · 2026-10-30 - [Open-source dash platform for the Ola S1 Pro Gen 1: swappable themes, plugins, CAN reference and an AI-agent skill (early WIP)](/nieuws-skills-plugins#i-7febcd3829) · [bron: Reddit](https://www.reddit.com/r/olaelectric/comments/1xj99i8/opensource_dash_platform_for_the_ola_s1_pro_gen_1/) · 2026-10-30 - [To set this in your Grok Bot, open it and paste: Save as skill "Daily X Growth": 80% early high-value replies to viral indie/SaaS/AI posts.](/nieuws-skills-plugins#i-f43c72ecfd) · [bron: X](https://x.com/grok/status/2115762974337974645) · 2026-10-29 ## Repo's, releases & updates - [Sorry Harvey! I Made a Free Open-Source Alternative to Your Overpriced Legal AI](/nieuws-repos-releases#i-ddab47bd29) · [bron: Hacker News](https://sorryharvey.com/) · 2026-10-29 - [Open Source or Custom in Enterprise AI Systems?](/nieuws-repos-releases#i-182f9a0319) · [bron: Hacker News](https://deepsense.ai/blog/when-code-gets-cheaper-judgment-gets-more-precious-quality-bottlenecks-in-enterprise-ai-systems/) · 2026-10-29 - [Your AI coding agent forgets everything when the session ends. Today's fastest-rising AI repo fixes that, and it got 848 GitHub stars in 24](/nieuws-repos-releases#i-8f04750405) · [bron: X](https://x.com/Yashpatil/status/2116020198608433572) · 2026-10-30 - [Show HN: Fengarde–OCSF-native open-source SIEM with local AI triage (Apache-2.0)](/nieuws-repos-releases#i-54c5e7fb91) · [bron: Hacker News](https://supermhel.github.io/fengarde/) · 2026-10-29 ## Financiering & markt - [AI coding startup Cognition is weighing a new funding round at a $70 billion to $80 billion valuation](/nieuws-financiering-markt#i-e131cfe7d4) · [bron: Reddit](https://www.reddit.com/r/technology/comments/1xifmg8/ai_coding_startup_cognition_is_weighing_a_new/) · 2026-10-29 - [Startup Nature in 2026: What Makes a Startup Successful? 🔹Innovation drives business growth. 🔹 Scalability creates new opportunities. 🔹 AI i](/nieuws-financiering-markt#i-9de6cfc61b) · [bron: X](https://x.com/startup_ed93737/status/2116030496916574712) · 2026-10-30 - [S.Korea AI chip startup raises $620M at a $2.9B valuation](/nieuws-financiering-markt#i-b5d4597945) · [bron: Hacker News](https://www.bloomberg.com/news/articles/2026-10-28/furiosaai-quadruples-valuation-to-2-9-billion-in-nvidia-chase) · 2026-10-29 - [An AI startup raises $50 million. Twitter: "The future is here!" 🚀 But ask three questions: What's the revenue? Are customers staying? Can t](/nieuws-financiering-markt#i-354a1a040d) · [bron: X](https://x.com/Neelshah317/status/2114624856063156383) · 2026-10-26 [← 30 oktober 2026](/nieuwsbrief-2026-10-30) · [1 november 2026 →](/nieuwsbrief-2026-11-01) · [Archief](/nieuwsbrieven)