About Security
Here are some tips you should follow to prevent other people from learning your ID and password and gaining unauthorized access to your account.
- Use a strong password
The more characters you use in your password, the stronger it gets. We recommend using a password at least 12 characters long, with a mix of letters, numbers, and symbols in your password.
- Use different passwords for different services
Using a unique password for each service is safer than reusing the same password across multiple services.
- Don’t forget to update your phone number
We will send important information to your phone including 2FA codes for login so make sure your registered phone number is up to date
- Stay away from suspicious websites/messages claiming to be Mercari
If you receive any suspicious email messages claiming to be from Mercari, delete them immediately without opening the message or clicking on any links.
- Remove your iD payments information when switching devices
If you’re registered for iD payments on Merpay, we recommend removing the iD payments registration information from the Mercari app on your old device before starting to use your new device. To learn how to do this, see our guide on switching devices here: https://help.jp.mercari.com/guide/articles/243/#b2(Japanese)
- Contact us if you lose your device
If you lose a device logged into your Mercari account, contact us and we’ll take action immediately to log you out of the account.
- Do not borrow or lend accounts
Letting another person use your account is an infringement of Mercari’s Terms of Service. Mercari is not responsible for any trouble that may arise from doing so.
- We recommend checking your login history regularly.
Check to see if you have any notifications or emails of logins to or usage of your account that you don’t recognize. You can check your account’s login history by going to the Login History page.
If you believe your account has been compromised
If someone else logs into your account without your knowledge, your personal information is at risk of being accessed by a third party. Take the steps below to help secure your account.
- Confirm your login history
Confirm your login history from the Login History page, confirm if there are any suspicious logins and force logout from any sessions as needed.
- Stop your Mercard credit card from being abused
If you are using a physical or virtual Mercari credit card (Mercard), you can request your card to be blocked from the app to prevent abuse.
- Change your password
Confirm that the email address linked to your account is also not compromised and change the password of your account from the password change menu.
- Make sure third party accounts you use for login are secure
Mercari offers the option to log in using third party accounts (Log in with Facebook, Sign in with Apple etc.). If you use a third party account to log in to Mercari, make sure that this account hasn’t been compromised and is secured too.
Security Initiatives at Mercari Group
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