Is Lightning Autofill safe?

Medium risk

Lightning Autofill fetches encrypted JavaScript from its servers and executes it on all pages for premium users.

For premium license holders, the extension contacts api.lightningautofill.com daily to retrieve an encrypted JavaScript payload, decrypts it using a key derived from the user's email and an RSA public key, and injects the result into every webpage via the chrome.userScripts API running in the page's own JavaScript context. Separately, when CAPTCHA solving is enabled, the extension detects audio CAPTCHA elements on any page and forwards their audio source URLs to ai.lightningautofill.com for automated transcription, then fills in the result.

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

tohodo.comv14.24.3Firefox Add-ons
42Risk
Who publishes it

tohodo.com - no other listings under this identity, 4 shared hostnames

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

Publisher
tohodo.com

Shared hosts - 4 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.lightningautofill.com
Also called by 2 other listings, including Lightning Autofill
docs.lightningautofill.com
Also called by 3 other listings, including Lightning Autofill, Rapid Autofill
lightningautofill.com
Also called by 4 other listings, including Lightning Autofill, Rapid Autofill, Password Slug
tohodo.com
Also called by 6 other listings

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 14.24.3. 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>

  • Schedule its own background tasks

    alarms

  • Add items to the right-click menu

    contextMenus

  • Sign you in with your Google account

    identity

  • Run its own code inside the pages you visit

    scripting

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

Where it sends data

Destinations our analysis observed Lightning Autofill 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.

  • api.lightningautofill.com

    Lightning Autofill sends data to api.lightningautofill.com. 2 other extensions we have analyzed send data here.

  • ai.lightningautofill.com

    Lightning Autofill sends data to ai.lightningautofill.com. One other extension we have analyzed sends data here.

Updated 2 November 2026amo-994809