Is CFCA CryptoKit.XMYLSW Extension safe?

Low risk

CFCA CryptoKit.XMYLSW Extension lets any xmztb.com page pick the native-messaging host and payload it forwards, with no allowlist.

This extension bridges bank pages on xmztb.com to a locally installed smart-card signing application via Chrome's native messaging. When a page on that domain sends a connect request, the extension passes the page-supplied host name straight to chrome.runtime.connectNative() and later relays the page-supplied payload to whichever native program that connects, without checking it against a fixed vendor host or command list. The domain is allowed over both https and unencrypted http, so the same bridge is reachable from a plaintext connection to the bank's site.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

CFCACryptoKitv3.4.0.1Chrome Web Store
17Risk
Who publishes it

CFCACryptoKit - 14 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
CFCACryptoKit

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 3.4.0.1. 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 xmztb.com

    https://*.xmztb.com/* and 1 more

  • Talk to a program installed on your computer, outside the browser's sandbox

    nativeMessaging

Where it sends data

Destinations our analysis observed CFCA CryptoKit.XMYLSW Extension 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.

  • locally-installed native messaging host (device-side, not a remote server)

    CFCA CryptoKit.XMYLSW Extension sends data to locally-installed native messaging host (device-side, not a remote server). Named as a recipient in this extension's own analysis.

Updated 30 September 2026ldfdgjpgabhpfdcepajhggdimphldhom