Marketplace Shield Privacy Policy
Marketplace Shield helps users review visible Facebook Marketplace listing pages and visible Marketplace chat text for possible scam patterns before they message a seller, send money, or share personal information.
Single Purpose
Marketplace Shield is a browser extension for supported Facebook Marketplace item pages. It highlights possible scam patterns and suggests verification steps. It does not claim that a listing is definitely a scam.
Data The Extension Handles
Marketplace Shield may read:
- Visible text on supported Facebook Marketplace item pages.
- Visible Marketplace chat text if a chat is open on the listing page.
- Visible listing image metadata, such as large visible image count, image alt-text samples, and source hostnames. Marketplace Shield does not collect image contents or full image URLs in the current version.
- Listing metadata visible on the page, such as title, price, listing age, location text, seller-review text, and seller-profile signals.
- User settings, local result feedback, and local duplicate-history text fingerprints stored in Chrome local storage.
How Data Is Used
The extension uses visible listing text, visible chat text, visible location text, and limited visible image metadata to run local rule-based analysis and show possible scam-pattern warnings, evidence chips, safety tips, score breakdowns, proof-checklist steps, and scan-debug details.
Optional local feedback is used to help the user export redacted examples for rule improvement. Optional duplicate-history fingerprints are used only to compare listings this browser has recently seen.
Data Sharing
Marketplace Shield does not sell user data.
Marketplace Shield does not upload listing text, chat text, location text, image metadata, feedback, duplicate-history fingerprints, or scan results to a server in the current version.
Exported fixtures or feedback logs are created only when the user clicks an export or download action. The user controls whether to share those exported files.
Data Storage
Marketplace Shield stores the following in Chrome local storage:
- Settings.
- Optional redacted feedback records.
- Optional duplicate-history text fingerprints.
Users can disable feedback storage and duplicate-history storage in Settings. Users can clear stored feedback records and duplicate-history fingerprints from Settings with Clear optional local data. Users can reset settings separately with Reset defaults.
User Control
- Turn off local feedback storage.
- Turn off duplicate-history fingerprint storage.
- See counts for optional stored feedback records and duplicate-history fingerprints.
- Clear optional local feedback and duplicate-history fingerprints.
- Reset extension settings to defaults.
- Export feedback logs for review.
- Remove the extension to delete extension-managed Chrome local storage.
Limits
Marketplace Shield is an early tool and may be inaccurate. It flags possible scam patterns, not proof that a listing is a scam.
The local publish-readiness checks for this version block unexpected runtime network APIs and remote extension-page assets. This supports the current local-only analysis design.
Contact
heroishere.business@pcpathfinder.com