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Malicious package

@telenor-se/corenpm

Malicious code in @telenor-se/core (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5156
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @telenor-se/core

What this malware does

Dependency confusion attack campaign targeting Scandinavian telecommunications and digital services organizations (Telenor, Ownit, Vimla, and Customer 360 / C360). Four packages published by the debating0166 npm account use inflated version numbers (99.0.x) to win npm registry resolution over private internal packages of the same names. A shared callback.js executed via the preinstall hook collects system reconnaissance data: hostname, username, working directory, platform, network interfaces, npm registry configuration, and environment variables matching organization-specific and CI/CD patterns (telenor, ownit, vimla, c360, customer, threesixty, maui, CI tokens, pipeline variables) and exfiltrates the payload via HTTP POST to 128.199.50.160:8888/depconf.

This package impersonates @telenor-se/core, an internal package of Telenor Sweden. Version 99.0.0 was published to resolve ahead of any private registry copy.

Malicious versions

all versions

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

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @telenor-se/core (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @telenor-se/core across your stack and pipelines.

  2. If you installed it — respond

    @telenor-se/core is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If @telenor-se/core was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks @telenor-se/core before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. @telenor-se/core 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

  • SafeDep · finder

Detect & block this

O3 blocks @telenor-se/core-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

@telenor-se/core (npm) malicious package — MAL-2026-5156 | O3 Security