The syft-acp-core package was published to the npm registry by user 'ada8877' (maintainer email k3mlol@proton.me) as part of a dependency-confusion / reconnaissance campaign. The package name mimics the 'syft-acp' internal/private package naming convention (an ACP component library) of a target organization, so that a misconfigured resolver installs this public lookalike instead of the intended private dependency.
The package declares a preinstall hook ("npm install @sentry/node && node examples/verify.js") that executes automatically at npm install time, before any application code runs. The bundled examples/verify.js initializes the @sentry/node client against a hardcoded, attacker-controlled Sentry DSN with sendDefaultPii enabled, resolves the installing host's public egress IP address by requesting Cloudflare's /cdn-cgi/trace endpoint (using a spoofed desktop-browser User-Agent to bypass bot challenges), then deliberately triggers a runtime exception and captures it. Flushing the event beacons the collected host telemetry (public IP plus Sentry default PII such as hostname, OS username and runtime/environment metadata) to the attacker's Sentry ingest endpoint at o4510485815754752.ingest.us.sentry.io.
Each impersonated namespace in the campaign beacons to a distinct Sentry project ID, letting the operator attribute successful installs to specific victim organizations — behaviour consistent with a dependency-confusion reconnaissance beacon rather than legitimate error monitoring. The install-time payload is byte-for-byte identical to the earlier 'click2ai' campaign, sharing the same Sentry organization (o4510485815754752) and a related ProtonMail maintainer identity, and differs only in the package name and target DSN. This package's beacon targets Sentry project 4511744089718784.
-= Per source details. Do not edit below this line.=-
package.json declares a preinstall hook npm install @sentry/node && node examples/verify.js that fires on every npm install. examples/verify.js resolves the installer's public IP via https://www.cloudflare.com/cdn-cgi/trace, attaches it as ip_address on a Sentry user, and captures a synthetic exception. The event is uploaded to a hardcoded DEFAULT_DSN pointing at Sentry org o4510485815754752.ingest.us.sentry.io/4511744089718784, which the installer did not configure. src/index.js additionally hardcodes the same DEFAULT_DSN as the library's default and forces sendDefaultPii: true, so consumers that call init() without supplying their own DSN or SENTRY_DSN environment variable send their captured errors and PII to the same author-controlled Sentry project instead of their own.
{
"malicious-packages-origins": [
{
"id": "IN-MAL-2026-011278",
"import_time": "2026-08-04T22:30:08.650120035Z",
"modified_time": "2026-08-04T21:58:15Z",
"sha256": "46bcb30b019b3455aa12747ac76d9aae4cc307eff76b61075c67c01304bdf625",
"source": "amazon-inspector",
"versions": [
"16.0.0"
]
},
{
"id": "IN-MAL-2026-016365",
"import_time": "2026-08-06T14:19:45.379005976Z",
"modified_time": "2026-08-06T13:10:53Z",
"sha256": "875123554120100d296bb41af939b3dd19053d7c51ce37b7f83dbfa446ef5b4e",
"source": "amazon-inspector",
"versions": [
"1.0.0"
]
}
]
}[
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
},
{
"cweId": "CWE-506",
"description": "The product contains code that appears to be malicious in nature.",
"name": "Embedded Malicious Code"
}
]
{
"evidence_files": [
{
"path": "package.json",
"sha256": "b42ceeb59fed17577919f3dd06cba981d06cefaaf27d7e73f782198262dcdb48",
"tlsh": "f3f078518d742f2315c4f3a16c6901466330ce4701a43d193acb022d4b4c72f24ff59d"
},
{
"path": "src/index.js",
"sha256": "812dd11f749a704ebddfdea4660e6207769071dacde571843028c915f95f71e7",
"tlsh": "0c12959a34f6632301e250f0025f90d97365c67a3379a9e071598be92fc90b8d6b3ec9"
}
],
"package_integrity": [
{
"filename": "syft-acp-core-16.0.0.tgz",
"hashes": {
"sha1": "031c1bc3b7c61efe4a3323374803b4e4b75948b6",
"sha512_sri": "sha512-a96/ePvxgyhWSl6C4qFvivWI6LEwA9ItzdWdVK3rbHqotUovEZkDol9QCOfjOx3up9vOtUKB6X9zBZhmdFet1w=="
}
}
]
}
{
"domains": [
"o4510485815754752.ingest.us.sentry.io"
],
"urls": [
"https://e82e1244d311e1f83fd57d89db4d62a3@o4510485815754752.ingest.us.sentry.io/4511744089718784"
]
}
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/syft-acp-core/MAL-2026-10765.json"