Is ESMART Token Web Plugin safe?
ESMART Token Web Plugin exposes a PKCS#11 hardware-token API to any webpage via an unauthenticated postMessage bridge injected on all sites.
The extension injects a content script on every page that forwards postMessage events — validated only by a hardcoded string present in the public bundle — to a local ESMART PKI Client HTTP server. Any page can invoke commands including certificate enumeration, PIN-based login, and digital signing of arbitrary data. Certificate metadata such as subject email, serial number, and PEM-encoded certificates can be read from a connected token without prior device authentication.
Part of this rating comes from analysis signals we haven't published as detailed findings yet.
Who publishes itisbcholding - no other listings under this identity
isbcholding - no other listings under this identity
What this publisher told the store about itself, and the other listings that told it the same thing.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
Publishers can request a review.
What it can do
Permissions this extension asks for, as declared in version 3.0.19. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.
Read and change your data on every site you visit
*://*/*
Talk to a program installed on your computer, outside the browser's sandbox
nativeMessaging
See the address and title of every tab you have open
tabs
Read and change cookies, including the ones that keep you signed in
cookies
Store data in your browser
storage
Where it sends data
Destinations our analysis observed ESMART Token Web Plugin contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.
- localhost (ESMART PKI Client HTTP server)
ESMART Token Web Plugin sends data to localhost (ESMART PKI Client HTTP server). Named as a recipient in this extension's own analysis.