WhatsApp security flaw

Thousands of links to private WhatsApp groups can still be easily found online, despite public outrage which led the company to change its stance and remove them from Google.
Of the 1,000 randomly selected links DW tested, 427 were active chat links. Even without actively joining a group, its title, description, image and creator's phone number are available for all. However, upon entering a group, it is possible to also see the phone numbers of up to 256 participants, as well as other information, and adding these numbers to one's contacts can reveal their names in the app.
Among the 427 active links DW examined, there were groups described to be for school classes, medical trainees, political campaigns, businesses, pornography and sex workers. Some groups included members with particularly sensitive identities, such as one chat with hundreds of members clearly labeled as an LGBTQ+ group in a Latin American country with high rates of homophobic murders.