In a recent Mozilla review of the privacy features of 21 popular video call apps, only two were singled out for outstanding features (Signal and Threema). Meanwhile, three products were slapped with a dreaded “*Privacy Not Included” warning label (Facebook Messenger, WeChat, and Houseparty).
Mozilla’s research also reveals that Slack, one of the most popular chat products, doesn’t give users the option to block contacts — a design decision that can enable harassment. As a result, a petition has been launched, urging Slack to add a “block” functionality.
