Archive BRAID DAILY
A worm that turns agent config files into an execution event
Subscribe

Braid Daily · 2026-06-08

A worm that turns agent config files into an execution event

One dropper at .github/setup.js, wired into seven agent config files, runs the moment you open the repo.

Dark editorial cover: a stack of config-file cards with one glowing yellow card branching lines to the others, a broken lock, on a charcoal surface.
When a config file is also an execution event.

The lead

1

SafeDep traces a self-propagating worm that drops a single payload at .github/setup.js and wires it into seven config files at once, among them a Claude Code SessionStart hook, a Cursor always-apply rule, and a VS Code folderOpen task. Opening the cloned repo in an agent or editor is enough to run it: "The credential stealer scans for and exfiltrates AWS, Azure, GCP, Vault, Kubernetes, npm, and…

Read source
Flow of the Miasma worm: an opened repo triggers a dropper wired into seven agent config files, all running a credential stealer that exfiltrates cloud secrets to GitHub.
Miasma: opening a cloned repo in an agent becomes an execution event.

When the eval flatters itself

2

Attack selection makes control evals look safer than they are

arXiv

Letting an attacker choose when to strike, rather than attacking on a fixed schedule, drops measured safety sharply without any change in attack capability: "At a 1% audit budget, our start policy reduces safety by 20pp on both BashArena and LinuxArena, and our stop policy reduces safety by 20pp on BashArena and 28pp on LinuxArena." The authors argue evals that assume a non-strategic attacker overestimate safety, and recommend eliciting attack selection in system cards.

“At a 1% audit budget, our start policy reduces safety by 20pp on both BashArena and LinuxArena, and our stop policy reduces safety by 20pp on BashArena and 28pp on LinuxArena.”

Read source

Why studying the finished model is starting too late

arXiv

A position paper argues a real science of AI has to study how behaviors emerge during training, not just inspect the finished snapshot: "Models are not static objects: they are snapshots of time-evolving processes shaped by data, objectives, architectures, and optimization dynamics." It proposes three rungs of understanding, prediction, intervention, and design, and notes scaling laws predict loss but not yet capabilities, bias, robustness, or safety.

“Models are not static objects: they are snapshots of time-evolving processes shaped by data, objectives, architectures, and optimization dynamics.”

Read source

Who owns the windfall

3

The case against owning the labs you regulate

The Guardian

Nathan E. Sanders and Bruce Schneier accept the goal behind Bernie Sanders' sovereign wealth fund but argue ownership backfires: "Public ownership of these companies entangles corporate profit and valuation with the public interest... In fact, it makes corporate influence on the government more likely." Their alternative is a datacenter energy tax, an AI token tax, and a public-option model built like Switzerland's Apertus.

“Public ownership of these companies entangles corporate profit and valuation with the public interest... In fact, it makes corporate influence on the government more likely.”

Read source

Two-thirds of new US datacenters are going up on drought-hit land

The Guardian

An analysis finds 517 of 809 planned US datacenters sit in areas that were in drought over the past year, with large sites using up to 5m gallons a day. "The AI industry is sprinting as fast as it can to gain market dominance, and the rest of us have to deal with a great increase in water demand in places already in drought." Datacenters are only about 4% of AI's added water need; power and chip fabrication dominate.

“The AI industry is sprinting as fast as it can to gain market dominance, and the rest of us have to deal with a great increase in water demand in places already in drought.”

Read source

Compute and the state

3

Korea's deputy PM meets Jensen Huang

Korea Ministry of Science and ICT

On the heels of the GPU award, deputy prime minister Bae Kyung-hoon met Nvidia chief Jensen Huang, the supply-side counterpart to a national compute plan that runs through one vendor.

Read source

The UK's sovereign-AI pledges, a year on

NVIDIA

Nvidia's own account of how last year's London Tech Week declaration between Jensen Huang and Keir Starmer has turned into deployed infrastructure, useful as a vendor's-eye view of the UK sovereign-AI program.

Read source

Agents on the job

3

Companion episode

Pray for Rain, Approve the Datacenter

· 00:25:31

The security thread is the one to keep pulling. Two of today's research items say our safety numbers are softer than they look, one because evals assume a polite attacker and one because we grade the finished model instead of how it got there. The Miasma worm is the same lesson without the abstraction: the config files an agent reads on startup are now executable, and a lot of grounded-agent setups treat them as inert.