Is Locker - Password Manager safe?

Low risk

Locker - Password Manager accepts sign-in tokens posted from pages and sends them to Locker's SSO endpoint.

The extension's all-sites content script listens for page messages carrying cs-authResult tokens and passes those tokens into the extension sign-in flow. The service worker and authentication page store the token and exchange it with api.locker.io for an SSO access token. The bundled code also contains Google Analytics Measurement Protocol collection code.

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

CyStackv4.0.65Chrome Web Store
15Risk
Who publishes it

CyStack - no other listings under this identity, 1 shared hostname

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

Publisher
CyStack
Declared legal entity
CyStack
Registered address
317 Đ. Trường Chinh, Ngã Tư Sở, Đống Đa, Hanoi City 10000, VN
Registered contact
CyStack

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

lwh.skrapp.io
Also called by 2 other listings: Skrapp, Skrapp Email Finder

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed Locker - Password Manager 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.

  • www.google-analytics.comwidely used

    Locker - Password Manager sends data to www.google-analytics.com. A widely used service: 346 other extensions we have analysed send data here.

  • api.locker.io

    Locker - Password Manager sends data to api.locker.io. No other extension we have analysed sends data here.

Updated 30 September 2026cmajindocfndlkpkjnmjpjoilibjgmgh