Is FantasyPros: Win your Fantasy League safe?
FantasyPros injects a content script on all pages that can be triggered by any site to read and transmit a user's Sleeper auth token.
The extension registers a content script on every website that responds to document-level CustomEvent messages dispatched by any page script. When the event carries a token-fetch command, the extension silently opens a hidden Sleeper.com tab, reads the user's Sleeper localStorage token, and posts it to mpbnfl.fantasypros.com. No check is made to verify that the triggering page originates from fantasypros.com.
Part of this rating comes from analysis signals we haven't published as detailed findings yet.
Who publishes itFantasyPros - no other listings under this identity, 18 shared hostnames
FantasyPros - no other listings under this identity, 18 shared hostnames
What this publisher told the store about itself, and the other listings that told it the same thing.
Shared hosts - 18 hostnames
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.
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 16.5.12. 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
http://*/*
Read and change your data on every secure site you visit
https://*/*
See the address and title of every tab you have open
tabs
Store data in your browser
storage
Where it sends data
Destinations our analysis observed FantasyPros: Win your Fantasy League 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.
- mpbnfl.fantasypros.com
FantasyPros: Win your Fantasy League sends data to mpbnfl.fantasypros.com. No other extension we have analyzed sends data here.