About: STIR/SHAKEN

Overview

STIR (Secure Telephony Identity Revisited) and SHAKEN (Signature-based Handling of Asserted Information using Tokens) is a protocol used to avoid spam phone calls and illegal phone number spoofing by digitally signing originating calls within Canada.

This means that customers can determine if an incoming call is a legitimate (signed) call number based on call display information.

Benefits

While STIR/SHAKEN cannot eliminate or block spam calls, it is intended to make it easier for you to avoid spam calls and illegal phone number spoofing.

The protocol that all Telecom Service Providers are required to implement—as a condition of service, regardless of which phone plan or features customers are subscribed to is provided at no additional cost or action required.

STIR/SHAKEN began to rollout holistically in Canada on November 30, 2021. As this is a gradual roll out, not all calls are signed at this time.

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How it works

The green checkmark on an incoming call display is part of the STIR/SHAKEN protocol to avoid spam calls and illegal phone number spoofing within Canada.

The green checkmark allows you to easily tell if an incoming call is signed or legitimate. This appears differently between home phone (landline) and mobile devices. Mobile devices will show a green checkmark on the call display to indicate the call is verified, while home phones will show "VER" on the call display to indicate the call is verified.

It is important to note that a call not being verified does not mean the call is spam. One of several reasons a call might not be verified is because a call may not be coming from a party that doesn't use STIR/SHAKEN protocols. For example, providers outside of North America do not use these protocols.

A verified checkmark or “VER” means that you can confidently answer, knowing the call has been authenticated. However, legitimate calls will not always have an indicator.

Learn more about How To: Protect Against Caller ID Spoofing, Spam and Other Unsolicited Calls.

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