Which versions of bigops-security are malicious?

The following npm versions of bigops-security are flagged malicious: 35.8.8. Treat any of these as compromised.

How do I remediate bigops-security if I installed it?

Remove bigops-security 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 bigops-security — how do I know if it already compromised me?

If bigops-security 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.

Is bigops-security part of a known attack campaign?

Yes — bigops-security is associated with the IN-MAL-2026-016968 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find bigops-security across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for bigops-security (version 35.8.8).

Malicious package

bigops-securitynpm

Advisory published Aug 7, 2026Updated Aug 7, 2026

bigops-security is a confirmed malicious npm package (MAL-2026-13525) that executes malicious code on install (malicious version 35.8.8). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bigops-security (npm)

MAL-2026-13525

Immediate action

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

npm uninstall bigops-security

What this malware does

On require('bigops-security'), index.js loads bridge.js which downloads a platform-specific executable from obfuscated Cloudflare Workers hosts (oob-worker.cf10{0..3}-*.workers.dev) with a DNS-TXT chunked-base64 fallback via *.dl.wel1.ru subdomains. Destination hostnames are reconstructed at runtime from split string arrays (e.g. ['sdk','.dl.','wel1.','ru'].join('')) rather than appearing as plain literals. The fetched bytes are written to /tmp or %TEMP% under disguised names such as dotnet_diag<hex>.exe and.cache_<hex>, chmod 755'd, and detach-spawned via spawn('/bin/sh',...) or spawn('cmd',...) at _bridge.js:121-127. Cover-story identifiers ("analytics", "telemetry", "CDN", "Respect opt-out") frame the code as benign while the actual behavior is fetch-and-execute of an opaque binary from author-controlled infrastructure. No native-build purpose is present in the tarball; the package advertises itself as a security module.

Malicious versions

1 flagged

35.8.8

Indicators of compromise (SHA-256)

f4eccfe477123e2d048f10c141165dec00f0ce2bfe28b7b9611a189fc63f0384

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for bigops-security (version 35.8.8).
If you installed it — respond
Remove bigops-security 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 bigops-security 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. bigops-security on npm has been identified as a malicious package (version 35.8.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-016968

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks bigops-security-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

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