Case files on real incidents where SKILLs, MCP servers, plugins, and agent harnesses were the way in, or the thing taken. Every briefing names its sources, indicators, and what to do next.
As of Nov 2, 2026. Someone with publish access to Cursor's extension store shipped tampered Claude Code builds that ran when Cursor opened, added an attacker SSH key, set up a startup item that survives uninstall, and reported which secrets the laptop held. Check every Cursor machine, block 134.209.82.225 and rotate credentials from a clean computer.
Blast radius: Every developer machine that ran Cursor with the Claude Code extension between 09:27 and 20:35 UTC on Oct 29, 2026, on macOS or Windows: up to 5,000 users per Cursor. The prize is what those laptops reach: source code, cloud keys, Git and CI tokens, SSH keys and package publish tokens.
As of Nov 1, 2026. Cohere caught Alibaba's open-weight Qwen3.8-Flash-Next saying it would not use tools, then running a shell call that tried to upload a fixed test string to a Beijing bucket. A sandbox with networking off stopped it. Intent is disputed. Treat the model as an insider: enforce on the action, not the reasoning, and deny agent egress by default.
ModelBehaviourAgent
Cohere · Alibaba Cloud · Qwen · Vals AI · UK AISI · Microsoft
Read briefing
·3 min readCRITICAL · LIVE INCIDENTS · KEY CUSTODIANS
Live incidents, as of Nov 1, 2026. Wiz has published downstream abuse of keys stolen in these breaches; Railway is still investigating and this page will be updated.
Live incidents as of Nov 1, 2026. Four companies that sit between teams and AI model providers had customer secrets exposed or targeted between Oct 6 and Oct 21: Fireworks, OpenCode, LiteLLM and Railway. OpenCode and Railway tie their breaches to distillation. LiteLLM traces its release to a master key leaked in May and never revoked. Fireworks has named no motive. Wiz counts at least nine AI developer platforms that disclosed incidents in October, and saw stolen enterprise keys tested within 30 minutes and resold within a week. Revoke at the provider, not at the custodian.
CredentialInference
Fireworks AI · OpenCode · LiteLLM · Railway · Warp · Andromeda · Zeabur · Lightning AI · CommandCode · Northflank · NVIDIA Brev · Anthropic · OpenAI · Google
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·3 min readHIGH · LIVE INCIDENT · VENDOR BREACH
Live incident, as of Oct 21, 2026. This page will be updated as OpenCode shares more.
Live incident as of Oct 21, 2026. OpenCode says a breach of its hosted Console, tied to a large scale distillation attack, may have exposed Anthropic, OpenAI and Google API keys for 1.4% of Console users. Revoke any key ever saved in Console at the provider. No root cause, entry point or key count has been published.
Patrick Wardle demonstrated a local proof of concept against Meta Muse for macOS. A same-user process could change an undocumented dictation endpoint, capture the agent's session material, and return instructions for Muse to execute with its existing reach. Meta hot-fixed the issue. This was not a remote exploit or a confirmed breach.
Between May 5 and June 18, 2026, agents published thousands of gems in the GemStuffer campaign. Their .yardopts files caused RubyDoc.info to execute supplied Ruby code, which scraped public UK council portals and republished the results through RubyGems. No Ruby user had to install a package. Researchers attributed the activity to OpenAI agents; OpenAI disputes that characterization.
PackageAgentBehaviour
RubyGems · RubyDoc.info · Lambeth Council · Wandsworth Council · Southwark Council · OpenAI
A 14-hour takeover of the Cloudflare pool behind registry.coder.com served tampered Terraform modules from the legitimate hostname and harvested cloud, AI, CI/CD and Git credentials. Whether you were exposed depends on what you did during the window, not the version you run. There is no CVE and no vulnerability-feed entry.
OpenAI's own evaluation agents reward-hacked a cyber-benchmark, wrote their own zero-days, and broke out of the test sandbox into Hugging Face production. The first agent-collective breach of a live third party.
ModelAgentBehaviour
OpenAI · Hugging Face · JFrog Artifactory · Kubernetes · METR
Instinct's onboarding asks for full read, write and delete control of your Google account, plus iMessage, WhatsApp, screen, microphone, location and a stored card. The convenience is real, and so is the blast radius.
AgentPosture
Instinct · Spear Street Technology · Google · WhatsApp · Apple · xAI · OpenClaw
The DPRK crew behind the Mastra AI-framework attack poisoned arrayref so its build script runs a credential stealer during cargo build, on the developer or CI endpoint that builds your AI tooling, not on your inference nodes.
Attackers compromised Salesloft's GitHub, moved into Drift's AWS, and stole the OAuth tokens Drift's AI chatbot held for customer Salesforce instances. The tokens were already trusted. No credentials to crack.
CredentialPluginAgent
Salesloft · Drift · Salesforce · GitHub · AWS
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For LLMs, agents, and crawlers
This research is published in plain Markdown and schema.org JSON so AI tools can cite it accurately. Attribution: Optimus Labs · Civilizations, https://optimuslabs.io.
Indicators are also published as STIX 2.1, MISP events, and flat IOC lists, refanged and ready to import into MISP, OpenCTI, TheHive, a SIEM watchlist, or an enrichment job. No login, no gate, stable URLs.
