Which versions of iife-sample are malicious?

Every published version of iife-sample on npm is considered malicious. Remove the package entirely.

How do I remediate iife-sample if I installed it?

Remove iife-sample from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed iife-sample — how do I know if it already compromised me?

If iife-sample was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

How do I find iife-sample across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for iife-sample (all published versions).

Malicious package

iife-samplenpm

Advisory published Dec 1, 2025Updated Dec 1, 2025

iife-sample is a confirmed malicious npm package (MAL-2025-191511) that executes malicious code on install. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in iife-sample (npm)

MAL-2025-191511

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall iife-sample

What this malware does

The package iife-sample was found to contain malicious code.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

b8e97bde46b5ac29b3ccdf1ff9f4776714cf09769cf0e5fd360ea8e3d0fe6f1d

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for iife-sample (all published versions).
If you installed it — respond
Remove iife-sample from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If iife-sample was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. iife-sample on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks iife-sample-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database