Is Mercari Safe? Security Review
3/5
Overall Safety Score
★
★
★
★
★
Verdict: Mercari provides adequate safety for a peer-to-peer marketplace with built-in payment protection. Standard marketplace risks apply, including potential scams and counterfeit items.
Mercari is a Japanese-founded consumer-to-consumer marketplace app for selling nearly anything. It handles payments through its platform, providing protection for both buyers and sellers.
Security Ratings Breakdown
| Category | Score | Rating |
|---|---|---|
| Encryption | 3/5 | |
| Privacy | 3/5 | |
| Track Record | 3/5 |
Security Features
- Built-in payment protection (Mercari Balance)
- Two-factor authentication
- Seller ratings and reviews
- In-app messaging (no personal contact info needed)
- Shipping label generation (no address exchange needed)
Privacy Concerns
- Purchase behavior and browsing tracked for recommendations
- Address data handled through shipping system
- Standard ad targeting based on activity
Past Security Incidents
- 2021 Mercari Japan disclosed unauthorized access that exposed customer and employee information through a Codecov compromise
- No major US Mercari platform breaches as of 2025
How to Stay Safe Using Mercari
- Only pay through Mercari's platform, never off-app
- Review seller ratings before purchasing
- Use the built-in shipping labels to protect your address
- Document items with photos when selling
Safer Alternatives
- Poshmark (fashion-focused)
- OfferUp (local pickup focus)
- eBay (more buyer protections)
🛡️
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Last updated: February 10, 2026