# MAL-2026-2516: Malicious code in sentinel-tool (PyPI)


- **Type:** Malicious package
- **Package:** `sentinel-tool` (PyPI)
- **Published:** 8 Apr 2026

## What is MAL-2026-2516?

MAL-2026-2516 is a malicious package in sentinel-tool, published on 8 Apr 2026. 

### Official description

The package installs a remote executable that uses a hardcoded Telegram channel for monitoring the user's activity, including regularly taking screenshots, and some remote control possibilities like switching the computer off and grabbing clipboard content. Some content suggests it was designed to be used by the uploader themself, but it poses the risk to anyone installing it.

---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-04-sentinel-tool

Reasons (based on the campaign):

 - Downloads and executes a remote executable.

 - spyware-like

## What should I do about MAL-2026-2516?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-2516 is a malicious package: sentinel-tool (PyPI). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-2516/ (Markdown: https://insights.sbomify.com/MAL-2026-2516/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-2516

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-2516/
Summaries are generated and may contain mistakes; the official description above is the record.