Google has announced a new security feature for Android devices designed to combat a rising wave of scams powered by artificial intelligence. The feature, called Fake Call Detection, is intended to alert users when a caller may be impersonating a trusted contact using a combination of number spoofing and AI-generated voice cloning.
The move comes as cybercriminals increasingly leverage generative AI tools to mimic the voices of family members, colleagues, or other known contacts in an attempt to obtain money, personal information, or account access from unsuspecting victims.
According to Google, traditional methods of verifying callers, such as checking the displayed phone number, are becoming less reliable as fraudsters adopt more sophisticated techniques to disguise their identities.
Growing threat of AI-driven impersonation fraud
The company pointed to a broader increase in impersonation scams across the globe. Recent assessments by international law enforcement and consumer protection agencies have highlighted identity-based fraud as one of the fastest-growing forms of financial crime.
Google noted that scammers are adapting their methods as consumers become more cautious about answering calls from unknown numbers. Instead of using unfamiliar numbers, fraudsters are increasingly making calls that appear to originate from someone already stored in a user's contact list.
These attacks typically involve two tactics. The first is caller ID spoofing, which allows criminals to manipulate the number displayed on a recipient's device. The second is AI-powered voice cloning, enabling them to imitate the speech patterns and tone of a trusted individual to make the deception more convincing.
How the new verification system works
To address this challenge, Google has developed a background verification process that operates automatically on supported Android devices. The system works by exchanging a silent authentication signal between devices during a call.
When a user receives a call from a saved contact and both parties are using the Google Phone app, the caller's device sends a verification signal confirming the legitimacy of the connection. If the signal is absent, the system performs additional checks to determine whether the call may be fraudulent.
Should Android detect that the number is being spoofed and that the genuine contact is not placing the call, the user will receive an on-screen warning recommending caution and advising them to end the conversation.
Google said the feature will be enabled by default and will begin rolling out globally this month to devices running Android 12 and later. The rollout will start with Pixel smartphones before expanding to other eligible Android devices.
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