Facing the increasingly rampant AI deepfake voice fraud, smartphones are now equipped with a system-level defense against fraud. On Tuesday, Google officially announced the launch of a new security feature called "Fake Call Detection" in the Android system, aimed at helping users accurately identify and block phone scams that use AI technology to impersonate acquaintances.
Current telecom fraud methods are undergoing technological iteration. As more users begin to reject unknown calls, criminals are shifting their focus to forging trust relationships, altering caller ID numbers, and using AI deepfake technology to mimic specific targets' voices. For example, a victim might receive a call displaying "Mom" on the screen, and the voice and tone could be identical to their mother's, but behind the call is actually a fraudster using AI tools to fabricate an emergency situation, tricking the victim into transferring money.
To address this social issue, Google's new defense will be enabled by default as a fundamental mechanism and run automatically in the background. Google has metaphorically described its working principle as a "digital handshake" between devices: when a user receives a call from a contact, and both parties are using Google's official "Phone" app, the caller's phone sends an encrypted silent confirmation signal to the recipient's device to verify that the call was indeed made by their physical device.
If a fraudster attempts to exploit technical loopholes for identity impersonation, this key initial confirmation signal will be missing. Once the recipient's device detects the anomaly, it will immediately initiate a secondary verification with the real contact's phone. If the genuine phone responds that "no call was made at this time," the victim's screen will immediately pop up an alert, prompting them to hang up the call promptly.
Notably, this core protection network is built on Rich Communication Services (RCS) technology, meaning the anti-fraud logic will have strong openness in the future, allowing other applications and third-party phone manufacturers to integrate it. According to the plan, this feature will first be activated on Pixel series devices this month and gradually expand to devices running Android 12 and above worldwide.
