Firefox Relay, a Mozilla service, generates random email addresses for users to protect their private email addresses from advertisers and spammers.

Firefox Relay forwards emails from the random email address to the user's private email address, and if the user receives an email that is spam, the user can delete the random email address.

Now Firefox Relay extends to generating virtual phone numbers for users to avoid advertising calls or SMS. Many services today require the user to provide a phone number, such as requiring a cell phone to receive a verification code. If you are worried that your phone number will be shared with service providers and used for advertising calls, Firefox Relay's virtual phone number can hide your real phone number.

The phone hiding service is available for a fee and provides 50 minutes of calls and 75 text messages for $5 per month, while the email hiding service has both free and paid options.

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