Meta announced on Wednesday that it’s rolling out a new tool, Scam Alert, to thwart con artists on WhatsApp. The optional feature, currently in beta testing, will run an on-device machine learning model to flag scam messages without giving WhatsApp, Meta or any other entity access to your private conversations.

To take part in the feature, you must turn on the Scam Alert tool in WhatsApp’s settings menu. From there, the AI tool will be automatically downloaded to your phone. You can disable the feature at any time.

Scam Alert operates in the background by classifying incoming text messages from unknown senders. It looks at communication…

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