Is User Agent Switcher, URL sniffer safe?

Clean risk

User Agent Switcher, URL sniffer can log visited request URLs and exposed request headers when its sniffer is enabled.

When both the change and logging settings are enabled, the extension listens to browser requests across all sites and records matching request details. Its internal log stores visited request URLs, request methods, resource types, and any request headers exposed to the extension, then displays them in the extension's view log page.

Smart Softwarev0.9.4.3Chrome Web Store
0Risk
Who publishes it

Smart Software - 7 other listings from the same operator, 1 of them carrying a finding

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

Publisher
Smart Software

Shared hosts - 2 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.

googlebot.com
Also called by 4 other listings, including BlazeMeter, User-Agent Switcher
atomurl.net
Also called by 6 other listings, including QR Code Generator

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 0.9.4.3. 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

    <all_urls>

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

  • Block and redirect the requests your browser makes

    declarativeNetRequest

Updated 30 September 2026ljfpjnehmoiabkefmnjegmpdddgcdnpo