This ability to mix the public and the private, as well as the ability to use bots to engage with users has proved to be problematic. In early 2021, a database selling phone numbers pulled from Facebook was selling numbers for $20 per lookup. Similarly, security researchers found a network of deepfake bots on the platform that were generating images of people submitted by users to create non-consensual imagery, some of which involved children. But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. WhatsApp, a rival messaging platform, introduced some measures to counter disinformation when Covid-19 was first sweeping the world. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels.
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