extuno
Extuno vs extension risk scanners
Many browser-extension risk scanners score an extension once from static signals, and some are no longer maintained. Extuno adds a dynamic sandbox, version diffing, and package coverage to the same evidence-led extension scoring, and is actively maintained.
What does a typical extension scanner do?
A browser-extension risk scanner reads an extension from its store and produces a quantified risk score from static signals - the permissions it requests, vulnerable third-party JavaScript libraries it bundles, a weak Content-Security-Policy, and missing store metadata. These tools give a quick read on an extension and shaped how many teams think about extension risk.
Two limits are common in this category: the analysis is a point-in-time score of static signals, so it does not run the extension or watch how it changes across updates; and some well-known scanners have been discontinued and are no longer maintained, leaving teams without ongoing coverage.
How does Extuno compare?
Extuno keeps the idea of an evidence-led risk score and goes further. It reads each version with 1100+ static rules, runs the extension in a network-segmented micro-VM to capture real runtime behavior - the endpoints it contacts and the payloads it sends - and diffs every update against the prior version to catch a clean extension that was poisoned later. It also covers developer packages such as npm, PyPI, WordPress, Composer, and Maven, and it is actively maintained.
When should you choose Extuno?
If you used a static extension scanner, or one that is no longer maintained, Extuno covers Chrome and Firefox extension analysis and adds dynamic sandboxing, cross-version diffing, more ecosystems, and a finding format that names the file, the line, why it is dangerous, and the recommended action.