Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of SourceSecure

SourceSecure by Jacob

Catches sensitive information before it is sent to an AI chat tool. All checking happens on this device.

Some features may require paymentSome features may require payment
0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
SourceSecure stops client details reaching ChatGPT, Claude, Microsoft Copilot, Google Gemini and the other AI chat tools it covers, by accident.

It reads what you are about to send, finds the things that should not leave your firm, and offers you a version with those details replaced. You choose whether to send the redacted version or what you typed. It never blocks you.

WHAT IT CATCHES

Client names, account numbers, SINs and SSNs, card numbers, addresses, postal codes, email addresses, phone numbers, company names and places. Your firm can add its own terms as well, such as a fund name or a project codename.

IT READS YOUR ATTACHMENTS TOO

PDFs, Word documents, spreadsheets, PowerPoint decks, plain text and scanned images. It shows you what it found, page by page, and you can black out anything else by dragging over it or undo a redaction with a click. It then attaches a redacted copy in place of the original.

IT ALSO CLEANS WHAT YOU CANNOT SEE

Author names, tracked changes that were deleted but never accepted, comment authors and document properties all travel inside an Office file. SourceSecure removes them from the copy it attaches.

EVERYTHING HAPPENS ON YOUR COMPUTER

The model that recognises names and places is a file inside this extension, not a service somewhere. Your messages and your documents are read in your own browser and are not sent to us. There is no account needed to see that: switch off your network and it still works.

FOR TEAMS

An admin can see whether the firm is actually using it, set terms everyone must always redact, and require that the high risk kinds stay switched on for everybody. Every figure they see is a firm total. No message text ever reaches us.

PROMPT COACHING, ON THE COMPLETE PLAN

The Complete plan can suggest how to ask a better question. That needs a model we run, so a redacted version of the conversation is sent to it, with every client detail already replaced by stand ins such as [PERSON_1]. Help me reads the whole conversation on the page, including anything typed but not yet sent, and starts as soon as a tip appears so it is ready when clicked. Nothing is stored. Any person can switch it off from the extension's icon, and with it off nothing they type leaves their computer for any reason.

Once a week it also writes each person a short private note about how their week with AI went, compared only with their own earlier weeks, with one habit to try next. The note is written from counts, never from anything they typed, and only they can see it. Their firm sees only how many people are working on each habit, and only once enough people have picked one that nobody can be singled out.

REQUIRES A SUBSCRIPTION

SourceSecure is sold to firms. Sign in with the address your firm added. Pricing and a free look at what it does are at sourcesecure.ca.

Privacy: sourcesecure.ca/privacy
Terms: sourcesecure.ca/terms
Security: sourcesecure.ca/security
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for chatgpt.com
  • Access your data for chat.openai.com
  • Access your data for claude.ai
  • Access your data for copilot.microsoft.com
  • Access your data for copilot.cloud.microsoft
  • Access your data for m365.cloud.microsoft
  • Access your data for gemini.google.com
  • Access your data for perplexity.ai
  • Access your data for www.perplexity.ai
  • Access your data for grok.com
  • Access your data for chat.deepseek.com
  • Access your data for meta.ai
  • Access your data for www.meta.ai
  • Access your data for chat.mistral.ai
  • Access your data for notebook.google.com
  • Access your data for notebooklm.google.com

Optional permissions:

  • Access your data for chatgpt.com
  • Access your data for chat.openai.com
  • Access your data for claude.ai
  • Access your data for copilot.microsoft.com
  • Access your data for copilot.cloud.microsoft
  • Access your data for m365.cloud.microsoft
  • Access your data for gemini.google.com
  • Access your data for perplexity.ai
  • Access your data for www.perplexity.ai
  • Access your data for grok.com
  • Access your data for chat.deepseek.com
  • Access your data for meta.ai
  • Access your data for www.meta.ai
  • Access your data for chat.mistral.ai
  • Access your data for notebook.google.com
  • Access your data for notebooklm.google.com
  • Access your data for sourcesecure.ca
  • Access your data for coach-lasowp7xjq-nn.a.run.app

Required data collection, according to the developer:

  • Authentication information
  • Personal communications
  • Personally identifying information
  • Website activity
  • Website content

Optional data collection, according to the developer:

  • Technical and interaction data
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Support Email
  • Copy add-on ID
Version
0.6.0
Size
100.28 MB
Last updated
4 days ago (Sep 27, 2026)
Related Categories
  • Privacy & Security
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • privacy
  • security
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.