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Google Shifts from SMS to QR Codes for Gmail Authentication
In an era where cybersecurity is paramount, relying solely on usernames and passwords is becoming increasingly inadequate. Gmail users have traditionally depended on SMS codes for secure login verification, but Google is set to change this approach due to the vulnerabilities associated with SMS messaging. The tech giant is moving towards employing QR codes as a more robust method of authentication.
Currently, Google utilizes SMS codes for two main purposes: validating new logins and preventing the mass creation of Gmail accounts by spammers. Users input their credentials and receive a six-digit code via SMS to complete the process. While this method can enhance account security, it is fraught with weaknesses.
SMS communications lack encryption, with messages often transmitted through intermediaries, exposing them to potential interception. Furthermore, phone numbers themselves provide minimal security. One of the most significant threats arises from SIM swap attacks, where fraudsters manipulate mobile carrier representatives to transfer a victim’s phone number to a device under their control. This tactic allows attackers to receive two-factor authentication codes directly, enabling unauthorized access to victims’ accounts. Such vulnerabilities have been exploited to compromise cryptocurrency wallets, underscoring the critical need to secure email accounts, which often serve as gateways to additional services.
According to a report by Forbes, Google is planning to address these security concerns by discontinuing SMS-based authentication. Instead, users will soon verify their logins using QR codes that they will scan directly with their mobile devices.
“Just like we want to move past passwords with the use of things like passkeys, we want to move away from sending SMS messages for authentication,” stated Ross Richendrfer, a spokesperson for Google, speaking to Forbes.
By adopting QR codes, Google effectively removes the reliance on the often insecure SMS system. This switch also complicates phishing attempts, as scammers frequently deceive users into providing SMS codes by impersonating legitimate entities like Google. With QR codes, the potential for such exploitation is significantly reduced, as users cannot inadvertently share a code they do not possess.
While Google has provided limited details about the timeline for this transition, Richendrfer mentioned that users can expect the change to occur within the next few months. It remains uncertain whether this rollout will be uniform across all regions. Additionally, users who currently utilize other two-factor authentication methods, such as code-generating apps or hardware security keys, will continue to have those options available for account verification. Google has indicated that further updates regarding this shift in authentication strategy will be provided as specifics are finalized.
Source
arstechnica.com