Mozilla unveils Firefox Monitor service, check Email address

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Ngày cập nhật gần nhất: 15/4/2026

Today Mozilla officially launches Firefox Monitor service, a free service allowing users to check if their accounts are secure, whether personal data has been compromised. Firefox Monitor is a result of collaboration between Mozilla and security expert Troy Hunt.

Users can utilize Firefox Monitor service to check if their passwords or email addresses have been compromised, and they can configure to receive notifications if their information is compromised.

Read more: Mozilla releases Firefox 96

Firefox Monitor homepage also outlines some security principles and privacy rights that users are advised to follow.

What to do if your email address is compromised?

If your email address is compromised, it's crucial to check which of your accounts are in alert status, have been breached, change the login passwords of accounts that share the same information, email address for login to Gmail, if possible, enable two-factor authentication and use a unique and strong password for each account.

If you're using Gmail, it's recommended to regularly change your Gmail password to avoid potential breaches where others might access and read your emails. The steps to change your Gmail password are simple, changing your password is the best course of action if you haven't activated 2-step security for your Gmail yet.

If you wish to check whether an email still exists or not, Firefox Monitor does not support this feature. You'll need to resort to the Check Email Existence trick here to filter out spam and long-unused emails.

At the Ignite conference, Microsoft unveiled new features soon to arrive on .NET Core 2.1, 2.2, and 3.0 promising to bring an even better working environment for developers.

Frequently Asked Questions

What is the purpose of the new Firefox Monitor service?

The Firefox Monitor service allows users to check the security of their accounts and determine if personal data, such as passwords or email addresses, has been compromised, enhancing online safety.

How can users be notified if their personal information is compromised?

Users can configure Firefox Monitor to receive notifications if their passwords or email addresses are found in data breaches, ensuring they can take prompt action to secure their accounts.

What steps should I take if my email address is compromised?

If your email address is compromised, check which accounts are affected, change passwords for those accounts, enable two-factor authentication, and use strong, unique passwords to enhance security.

Does Firefox Monitor offer a feature to check if an email exists?

No, Firefox Monitor does not support checking whether an email address exists. Users need to utilize alternative methods, such as the Check Email Existence trick, to filter out unused emails.

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