test-on-other-againnpm
Advisory published Updated
test-on-other-again is a confirmed malicious npm package (MAL-2026-491) that executes malicious code on install (malicious version 99.9.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in test-on-other-again (npm)
What this malware does
The package test-on-other-again was found to contain malicious code.
The OpenSSF Package Analysis project identified 'test-on-other-again' @ 99.9.8 (npm) as malicious.
It is considered malicious because:
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The package communicates with a domain associated with malicious activity.
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The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for test-on-other-again (version 99.9.8).
If you installed it — respond
Remove test-on-other-again 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 test-on-other-again 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
Credits
- Amazon Inspector · finder
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks test-on-other-again-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.