A that allegedly left the phone numbers of around 300,000 people exposed .
The loophole was within the Click to Chat feature which streamlines conversations. It was first revealed by the WhatsApp-focused website WaBetaInfo and later reported by security researcher Athul Jayaram.
The feature lets users create a wa.me/ URL that can be shared with friends and prospective customers to initiate a chat or join a group, without requiring them to save a phone number first.
WhatsApp should have asked Google and other search engines …
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