If this package is installed
Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.
Details
Source: amazon-inspector (bb5b8b4484126f787f9917d91b6815927146a308f64bfb852c57f5d60bf4bfbb)
Analysis of fontus 0.0.3 on PyPI did not identify any code paths that exfiltrate installer data, execute attacker-controlled payloads at install or import time, relay caller-supplied data to third-party destinations, distribute live credentials, or establish persistence. No install-time network fetches, no lifecycle shell execution, no reads of credential paths (~/.aws, ~/.ssh, ~/.npmrc, browser profiles), and no obfuscated or dynamic-exec patterns were observed.
Source: kam193 (2a8fcff0fd4d827c6f174318ee41ea82eb2667c6d65349a01ca2215aa2f4dd5e)
The package most likely performs fingerprinting by exfiltrating basic information and available fonts, with no other functionality.
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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.
Campaign: 2026-10-fontus
Reasons (based on the campaign):
- The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
Indicators of compromise
Shown defanged and not clickable. Search any indicator to find other packages using it.
Domains
- conservative-execute-shoulder-innovation[.]trycloudflare[.]com other packages →
- ci-collector[.]andy-827[.]workers[.]dev other packages →
- remind-eos-standard-cds[.]trycloudflare[.]com other packages →