simplisafe-gatsbynpm
simplisafe-gatsby is a confirmed malicious npm package (MAL-2026-6379) that executes malicious code on install (malicious versions 1.0.1, 1.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in simplisafe-gatsby (npm)
What this malware does
On npm install, the package's preinstall hook (package.json declares "preinstall": "node index.js") executes index.js, which collects the installer's hostname, username, home directory, DNS configuration, package metadata, and the contents of /etc/passwd and /etc/hosts (via fs.readFileSync), then POSTs the collected data over HTTPS to a Burp Collaborator subdomain at xpqamgvad3ok4bc11xar5t7q8he820qp.oastify.com. The package has no advertised functionality (empty author, empty description, single recon payload file) and its name is consistent with a dependency-confusion attempt against SimpliSafe's internal Gatsby package namespace. Any machine that runs npm install against this name will leak system identity and local-account information to the attacker.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for simplisafe-gatsby (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging simplisafe-gatsby across your stack and pipelines.
If you installed it — respond
Remove simplisafe-gatsby 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 simplisafe-gatsby 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.
How O3 protects you
O3 blocks simplisafe-gatsby 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
Campaign
References
Credits
- Amazon Inspector · finder
- ReversingLabs · finder
Detect & block this
O3 blocks simplisafe-gatsby-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.