WhatsApp private group links visible in Google search results

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Journalist Jordan Wildon stated on Twitter that WhatsApp groups may not be as secure as people thought they were and shared a screenshot, showing some links to groups appearing in Google search results. Apparently, when users create a link to send to someone to join their group, it gets indexed by Google and is accessible.
A WhatsApp’s spokesperson reminded people that links that should be private shouldn’t be disclosed on publicly accessible websites, apparently explaining that the issue was due to unreasonable public posting of some links. When a link for a private group is posted on publicly available websites, it can be used by anyone to join the group and in consequence, see all the messages in it.
However, reverse engineer Jane Manchun Wong’s post on Twitter regarding the situation brings another perspective on it – she is stating this situation was a result of a misconfiguration which allowed around 470,000 Group Invite links to be indexed, and not because someone has not been careful enough when sharing private links. According to her, WhatsApp could change certain configurations in order to exclude the invite pages from appearing in search engines.
Nevertheless, for the time being, WhatsApp maintains the position that this is intended behavior, not a bug.
Questions & Answers
Q.What is the primary security concern raised about WhatsApp groups?
What is the primary security concern raised about WhatsApp groups?
The main concern is that private group invite links are appearing in Google search results. This means anyone finding these links can join the group and view all its messages, compromising the privacy users might expect.
Q.What is WhatsApp's official stance on why these links are visible?
What is WhatsApp's official stance on why these links are visible?
WhatsApp maintains that this is intended behaviour, not a bug. They suggest the issue arises when users post private links on publicly accessible websites, implying user error in disclosure.
Q.Does everyone agree with WhatsApp's explanation for the problem?
Does everyone agree with WhatsApp's explanation for the problem?
No, reverse engineer Jane Manchun Wong suggests a different cause. She believes it resulted from a misconfiguration that allowed approximately 470,000 Group Invite links to be indexed, not solely due to users publicly posting them.
Q.What could be done to prevent these links from appearing in search results?
What could be done to prevent these links from appearing in search results?
According to Jane Manchun Wong, WhatsApp could adjust certain configurations. This change would specifically exclude the invite pages from being indexed and appearing in search engines like Google.
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