Is CheckFlow Browser Relay safe?

Medium risk

CheckFlow Browser Relay can attach its local debugger relay to sites saved in its own blocklist.

Its options page saves allow/block rules as allowlist and blocklist, but the background policy checks allowDomains and blockDomains instead. When the user connects the relay, this mismatch means a blocked or not-allowed active tab can still be attached with chrome.debugger and browser debugging events are forwarded to the local WebSocket relay.

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

Reji Modiyilv2026.4.1.1Chrome Web Store
40Risk
Who publishes it

Reji Modiyil - no other listings under this identity

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

Publisher
Reji Modiyil

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 CheckFlow Browser Relay 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.

  • 127.0.0.1

    CheckFlow Browser Relay sends data to 127.0.0.1. 7 other extensions we have analysed send data here.

Updated 30 September 2026gbhnalmnijncecapleoengindkloelki